GOST R ISO 13680-2011

GOST R ISO 13680−2011

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

PIPES SEAMLESS CROSSING, PUMP-COMPRESSOR AND PIPE STORAGE FOR COUPLINGS FROM CORROSION-STABLE HIGH-LIQUE STEELS AND ALLOYS FOR OIL AND GAS INDUSTRY

Technical specifications

Seamless casing, tubing and coupling stock from corrosion-resistant high-alloy steels and alloys for petroleum and natural gas industries. Specifications

ACS 75.180.10
77.140.75
OKP 13 2100
13 2780

Date of implementation 2013−01−01

Foreword

The goals and principles of standardization in the Russian Federation are established by the Federal Law No. 184-FZ of December 27, 2002 «On Technical Regulation», and the rules for the application of the national standards of the Russian Federation — GOST P 1.0−2004 * «Standardization in the Russian Federation: Basic Provisions"
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* The document is not valid on the territory of the Russian Federation. There is GOST R 1.0−2012. — Note of the database manufacturer.

About the standard

1 PREPARED by Subcommittee SC 7 «Pipes of ruptured oil grades» of the Technical Committee for Standardization TK 357 «Steel and Cast Iron Tubes and Cylinders» on the basis of the authentic translation into Russian of the standard specified in Clause 4, which is executed by the Specialized Translation Firm «Interservis"

2 was introduced by the Technical Committee for Standardization of TC 357 «Steel and Cast Iron Pipes and Cylinders"

3 APPROVED AND ENABLED The Order of the Federal Agency for Technical Regulation and Metrology of November 30, 2011 N 658-st

4 This standard is identical to the international standard ISO 13680: 2010 * «Petroleum and natural gas industries — Seamless pipes made of corrosion-resistant alloys for use as casing, tubing and connecting.» Technical delivery conditions «(ISO 13680: 2010» Petroleum and natural gas industries — Corrosion resistant alloy seamless tubes for use as casing, tubing and coupling stock.
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* Access to international and foreign documents, mentioned here and below in the text, can be obtained by clicking on the link to the site shop.cntd.ru. — Note of the database manufacturer.

The name of this standard has been changed with respect to the name of this international standard to be brought into conformity with GOST R 1.5 (Subsection 3.5).

When applying this standard it is recommended to use the corresponding national standards of the Russian Federation and interstate standards instead of the reference international standards, the information of which is given in the supplementary annex DB

5 INTRODUCED FOR THE FIRST TIME


Information on changes to this standard is published in the annually published information index «National Standards», and the text of the amendments and amendments is published in the monthly index «National Standards». In case of revision (replacement) or cancellation of this standard, the relevant notice will be published in the monthly published information index «National Standards». The relevant information, notification and texts are also posted in the public information system — on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet

Introduction

This standard is identical to the international standard ISO 13680: 2010 «Petroleum and natural gas industries — Seamless pipes made of corrosion-resistant alloys for use as casing, tubing and connecting.» Technical delivery conditions «, widely used in world practice in establishing requirements for pipes from high-alloy steels and alloys for use in equipment and oil and gas production systems in contact with hydrogen sulphide-containing media, as well as in installations for the purification of high-sulfur of native gases.

This standard has been developed with a view to transferring the Russian oil and gas industry to the world practice of using pipes with high cracking resistance when transporting hydrogen sulphide-containing media under aggressive environmental conditions.

The present standard regulates the production technology and traceability, establishes requirements that ensure the necessary strength and corrosion resistance of products, defines the requirements for the basic chemical composition of steels and alloys, the mechanical properties of stretching, hardness, impact performance, macro and microstructure, surface quality, flattening and continuity, the assessment of the corrosion resistance of the material of products to the requirements of ISO 15156−3.

In the text of this standard, as compared to ISO 13680: 2010, individual phrases have been changed, some terms and symbols have been replaced by their synonyms and equivalents in order to comply with the norms of the Russian language and in accordance with the accepted national terminology and notation. The term «corrosion-resistant alloy» is replaced by a similar national term «corrosion-resistant high-alloy steels and alloys», terms (according to ISO 13680) 4.1.9. Row 1 (label 1) and 4.1.10. Row 2 (label 2) with definitions replaced by terms «4.1.8 outer diameter» and «4.1.17 wall thickness» adopted in the national industry for ordering and establishing requirements for pipe products. The marking of the date of manufacture of articles during the transitional period between two different editions of ISO 13680 is excluded from ISO 13680 (11.3, second paragraph).

For the purpose of comparability of corrosion-resistant steels and alloys with corrosion resistance in hydrogen sulfide-containing media and aggressive environmental conditions used in the national industry, the designations of steels and alloys in this standard are specified in accordance with the rules adopted in the national standardization. Table of comparability of the designations of material marks according to this standard and ISO 13680 is given in the supplementary Appendix YES.

The values of units of values in the American system of units (USC) are excluded for adjustment in accordance with GOST 8.417 and the corresponding Appendix C. The designations accepted in the American standards that contradict the notations adopted in international standards were replaced.

Excluded is appendix F, related to licensing by the American Petroleum Institute.

1 area of use

This standard applies to seamless casing, tubing and tube billets for couplings made of corrosion-resistant high alloy steels and alloys, supplied under two levels of product requirements:

— PSL-1 — the level setting the basic requirements of this standard for products;

— PSL-2 — the level setting, in addition to the basic, additional requirements for corrosion resistance and resistance of products to environmental cracking and product certification in accordance with ISO 15156−3, given in Appendix E.

At the discretion of the manufacturer, products of the PSL-2 level can be delivered instead of the PSL-1 level products.

This standard provides for four classes of materials from which products can be manufactured:

a) Class 1 — martensitic and martensitic-ferritic steels;

b) class 2 — austenitic-ferritic steels;

c) class 3 — austenitic alloys based on iron;

d) Class 4 — Nickel-based austenitic alloys.

This standard does not consider pipe connections.

Notes

1 Corrosion-resistant steels and alloys covered by this standard are special steels and alloys conforming to ISO 4948−1 and ISO 4948−2.

2 The corrosion resistance of materials of this standard may be affected by the way the pipes are connected.

3 It should be taken into account that materials of not all classes and strength groups intended for products of the PSL-1 level are resistant to cracking that conforms to the requirements of ISO 15156−3, therefore, not all of them are intended for products of the PSL-2 level.

2 Relevance

2.1 Double normative references

Using a reference to two standards simultaneously means that these standards are interchangeable according to their requirements.

2.2 Units of Measurement

Units of the international SI system are used in this standard.

In the writing of the values of indicators as a decimal point, a comma is applicable.

3 Normative references

Normative references to the following standards are used in this standard * :
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* For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document, including any amendments or amendments.

The table of compliance of national standards with international standards can be found on the link. — Note of the database manufacturer.

ISO 377 Steel and steel products. Location and preparation of test specimens and samples for specific mechanical tests (ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing)

ISO 404 Steel and steel billets. General technical delivery conditions (ISO 404, Steel and steel products — General technical delivery requirements)

ISO 525 Abrasives, cemented. General requirements (ISO 525, Bonded abrasive products — General requirements)

ISO 783 Metallic materials. Tensile strength at elevated temperature (ISO 783, Metallic materials — Tensile testing at elevated temperature)

ISO 4885 Articles of ferrous metals. Types of heat treatment. Dictionary (ISO 4885, Ferrous products — Heat treatments — Vocabulary)

ISO 4948−1 Steel. Classification. Part 1. Classification of steels on undoped and alloyed in chemical composition (ISO 4948−1, Steels — Classification — Part 1: Classification of steels into unalloyed and alloy steels based on chemical composition)

ISO 4948−2 Steel. Classification. Part 2. Classification of unalloyed and alloyed steels according to the main quality classes and the main property or area of application (ISO 4948−2, Classification — Part 2: Classification of unalloyed and alloy steels according to the main quality classes and main property or application characteristics)

ISO 6508−1 Metallic materials. Rockwell hardness test. Part 1. Test method (scales A, B, C, D, E, F, G, H, K, N, T) [ISO 6508−1, Metallic materials — Rockwell hardness test — Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N, T)]

ISO 6892−1 Metallic materials. Tensile tests. Part 1. Test at room temperature (ISO 6892−1, Metallic materials — Tensile testing — Part 1: Method of test at room temperature)

ISO 6929 Steel products. Definition and classification (ISO 6929, Steel products — Definitions and classification)

ISO 8501−1: 2007 Preparation of steel substrates before application of paints and related products. Visual assessment of surface cleanliness. Part 1. The degree of rust and the degree of preparation of the uncoated steel surface and the steel surface after the complete removal of the previous coatings (ISO 8501−1: 2007, Preparation of steel substrates before application of paints and related products — Visual assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates

ISO 9303 Seamless and welded steel pipes (except for pipes obtained by submerged arc welding). Ultrasonic inspection of the entire peripheral surface to detect longitudinal imperfections (ISO 9303, Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes — Full peripheral ultrasonic testing for the detection of longitudinal imperfections) *
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* ISO 10893−10: 2011 «Non-destructive testing of steel pipes — Part 10: Automatic ultrasonic inspection of welded and welded steel pipes around the entire circumference (except for submerged arc welding) to detect longitudinal and / or transverse defects."


ISO 9304 Seamless and welded steel pipes (except for pipes obtained by submerged arc welding). Eddy current monitoring for detection of imperfections (ISO 9304, Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes — Eddy current testing for the detection of imperfections) *
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* ISO 10893−2: 2011 «Non-destructive testing of steel pipes — Part 2: Automatic control by eddy current method for steel seamless and welded pipes (except for pipes obtained by submerged arc welding) for defect detection».


ISO 9305 Seamless steel seamless pipes. Ultrasonic inspection of the entire peripheral surface to detect transverse imperfections (ISO 9305, Full steel ultrasonic testing for the detection of transverse imperfections) *
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* ISO 10893−10: 2011 «Non-destructive testing of steel pipes — Part 10: Automatic ultrasonic inspection of welded and welded steel pipes around the entire circumference (except for submerged arc welding) to detect longitudinal and / or transverse defects."


ISO 9402 Seamless and welded steel pipes (except for pipes obtained by submerged arc welding). Testing of ferromagnetic steel pipes by the method of scattering over the entire circumference of the flux using a magnetic transducer to detect longitudinal defects (ISO 9402, Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes — Peripheral magnetic transducer / flux leakage testing of ferromagnetic steel tubes for the detection of longitudinal imperfections) *
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* ISO 10893−3: 2011 «Non-destructive testing of steel pipes — Part 3: Automatic control by the method of scattering magnetic flux along the entire circumference of seamless and welded ferromagnetic steel tubes (other than submerged arc welding) to detect longitudinal and / or transverse defects «.


ISO 9598 Seamless seamless steel pipes. Control of the entire peripheral surface of the pipes from ferromagnetic steel by examining magnetic scattering fields to detect transverse imperfections (ISO 9598, Fuller magnetic transducer / flux leakage testing of ferromagnetic steel for detection of transverse imperfections)
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* ISO 10893−3: 2011 «Non-destructive testing of steel pipes — Part 3: Automatic control by the method of scattering magnetic flux along the entire circumference of seamless and welded ferromagnetic steel tubes (other than submerged arc welding) to detect longitudinal and / or transverse defects «.


ISO 10124 Seamless and welded steel pressure pipes (excluding pipes manufactured by submerged arc welding). The ultrasonic inspection method for detecting layered imperfections (ISO 10124, «Seamless and welded (except submerged arc-welded)» steel tubes for pressure purposes — Ultrasonic testing for the detection of laminar imperfections)

ISO 10474 Steel and steel products. Documents on control (ISO 10474, Steel and steel products — Inspection documents)

ISO 10543 Seamless and welded steel pressure pipes, crimped with hot drawing. Ultrasonic thickness control for the entire peripheral surface (ISO 10543, Full and ultrasonic thickness testing)

ISO 11484 Steel pressure pipes. Qualification and certification of personnel in non-destructive testing (ISO 11484, Steel products — Employer’s qualification system for nondestructive testing (NDT) personnel)

ISO 11496 Seamless and welded welded steel pipes. Ultrasonic Inspection of the ends of pipes for the detection of layered imperfections (ISO 11496, Tubular and Ultrasonic testing for tube ends for detection of laminar imperfections) *
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* ISO 10893−8: 2011 «Non-destructive testing of steel pipes — Part 8: Automatic ultrasonic inspection of seamless and welded steel pipes for detection of laminar imperfections».


ISO 12095 Welded and seamless welded steel pipes. Fluid penetration testing (ISO 12095, Seamless and welded steel tubes for pressure purposes) *
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* ISO 10893−4: 2011 «Non-destructive testing of steel pipes — Part 4: Inspection by penetrating liquids of steel seamless and welded pipes for the detection of surface defects».


ISO 13665 Seamless and welded steel pressure pipes. Control of the body of the pipe by the magnetic particle method for detecting surface imperfections (ISO 13665, Seamless and welded steel tubes for pressure purposes — Magnetic particle inspection of the tube body for the detection of surface imperfections)
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* ISO 10893−5: 2011 «Non-destructive testing of steel pipes — Part 5: Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface defects».


ISO 14284 Steel and cast iron. Selection and preparation of samples for determination of the chemical composition (ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition)

ISO 15156−3: 2003 Petroleum and natural gas industries. Materials for use in environments containing hydrogen sulphide, in oil and gas production. Part 3. Crack-resistant corrosion-resistant and other alloys (ISO 15156−3: 2003, Petroleum and natural gas industries — Materials for use in -containing environments in oil and gas production — Part 3: Cracking-resistant CRAs (corrosion-resistant alloys) and other alloys) *
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* ISO 15156−3: 2009 «Petroleum and natural gas industries — Materials for use in environments containing hydrogen sulphide in oil and gas production — Part 3: Crack resistant corrosion-resistant (CRA) and other alloys».


ISO 80000−1 Values and units. Part 1. General provisions (ISO 80000−1, Quantities and units — Part 1: General)

ASNT SNT-TC-1A Recommended Practice N SNT-TC-1A. Non-destructive testing (ASNT SNT-TC-1A, Recommended practice No. SNT-TC-1A — Non-destructive testing)

ASTM A 370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products (ASTM A 370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products)

ASTM A 604 / A 604M Investigation of the macrostructure of blanks prepared in an electric arc furnace with a consumable electrode, by etching (ASTM A 604 / A 604M, Standard Practice for macro-testing of consumable electrode remelted steel bars and billets)

ASTM A 941 The terminology for steels, stainless steels, related alloys and ferroalloys (ASTM A 941, Terminology relating to steel, stainless steel, related alloys, and ferroalloys)

ASTM E 18 Standard methods for controlling Rockwell hardness and Rockwell hardness of metallic materials (ASTM E 18, Standard test methods for Rockwell hardness and Rockwell superficial hardness of metallic materials)

ASTM E 21 Standard Test Methods for Tensile Strength of Metallic Materials at Elevated Temperature (ASTM E 21, Standard Test Methods for Elevated Temperature Tensile Tests of metallic materials)

ASTM E 23 Standard test methods for impact bending of metallic materials on notched specimens (ASTM E 23, Standard test methods for notched bar impact testing of metallic materials)

ASTM E 29 The standard technique for using significant digits in test results to determine compliance with standards (ASTM E 29, Standard Practice for using significant digits in test data to determine conformance with specifications)

ASTM E 45−05е3 Standard methods for determining the content of nonmetallic inclusions in steels (ASTM Е 45−05е3, Standard test methods for determining the inclusion content of steel)

ASTM E 165 Standard inspection method for penetrating liquid (ASTM E 165, Standard Practice for Liquid Penetration Test for General Industry)

ASTM E 213 Standard practice of ultrasonic examination of metal pipes and tubular products (ASTM E 213, Standard Practice for ultrasonic testing of metal pipes and tubing)

ASTM E 309 The standard practice of eddy current testing of steel pipe products using the magnetic saturation effect (ASTM E 309, Standard Practice for eddy-current examination of steel tubular products using magnetic saturation)

ASTM E 340 Standard method for controlling the macrostructure of metals and alloys by etching (ASTM E 340, Standard test method for macroetching metals and alloys)

ASTM E 381 Standard method for studying the macrostructure of rolled steel, steel blanks, blooms and forgings by etching (ASTM E 381, Standard method of macro-testing steel bars, billets, blooms, and forgings)

ASTM E 562 Standard method for determining the volume fraction by means of systematic manual point counting (ASTM E 562, Standard test method for determining volume fraction by systematic manual point count)

ASTM E 570 Standard practice for the control of ferromagnetic steel pipe products by the method of magnetic flux scattering (ASTM E 570, Standard Practice for flux leakage examination of ferromagnetic steel tubular products)

ASTM E 709 Standard Guide for Magnetic Particle Testing (ASTM E 709, Standard Guide for Magnetic Particle Examination)

NACE MR 0175 / ISO 15156−3 Petroleum and natural gas industries. Materials for use in hydrogen sulphide-containing media during oil and gas production. Part 3. Resistant to cracking corrosion-resistant (CRA) steels and alloys (NACE MR 0175 / ISO 15156−3, Petroleum and natural gas industries — Materials for use in -containing environments in oil and gas production)

4 Terms and definitions, notations, abbreviations

4.1 Terms and definitions

The terms used in this standard are ISO 377, ISO 404, ISO 4885, ISO 4948−1, ISO 4948−2, ISO 6929, ISO 10474, ASTM A 941, and the following terms with the corresponding definitions:

4.1.1 defect: An imperfection having a size sufficient to reject the product based on the criteria established by this standard.

4.1.2 quench hardening, quenching: A heat treatment that involves heating above the critical temperature, holding at this temperature (austenization) and then cooling under conditions where the austenite is converted to martensite.

Notes

1 After tempering, they usually spend their holidays.

2 Provided in accordance with ISO 4885.

4.1.3 product tubulars (product, tubular product): The tube and / or pipe preform for coupling individually or collectively.

4.1.4 manufacturer: An enterprise, company or corporation that has production facilities for the production of seamless casing and tubing and tubular blanks for couplings.

4.1.5 inspection lot, lot (inspection lot, lot): A certain amount of production of one given outer diameter and one wall thickness, strength group, one production method, in one delivery state after the final heat treatment or with the same degree of cold deformation, the length specified in Table A.16 A).

NOTE The maximum number of products in the inspection lot is indicated in Table A.21.

4.1.6. Corrosion-resistant steel or alloy; CRA (corrosion-resistant steel or alloy): A steel or alloy with resistance to general and local corrosion and / or resistance to cracking in the environment, causing corrosion of carbonaceous and low-alloy steels.

4.1.7 linear imperfection: Imperfection, the length of which considerably exceeds its width, such as captivity, sunsets, crack, bully, cut, scratch and others.

NOTE In national standardization, non-linear imperfections include imperfections, the length of which is commensurate with their width.

4.1.8 Outer diameter: Nominal outer diameter, specified when ordering products.

4.1.9 tubing: A pipe that is placed in a well and serves to lift production of a well or pumping a working fluid.

4.1.10 imperfection: The discontinuity of the wall or surface of the product, which may be detected by visual inspection or by the methods of nondestructive testing provided for in this standard.

4.1.11 casing: A pipe lowered from the surface to support the walls of a borehole.

4.1.12 solution annealing, annealing (solution annealing): Heat treatment, providing heating to the desired temperature, holding at that temperature, the duration of which must be sufficient to move one or more components into a solid solution, and subsequent cooling, the rate of which should be sufficient for these components to remain in the solid solution.

4.1.13 tempering: A heat treatment that involves a single or multiple heating to a specified temperature, below the critical temperature, holding at this temperature, and then cooling.

Notes

1 Leave is usually carried out after quenching.

2 Provided in accordance with ISO 4885.

4.1.14 melting (cast, heat): Products of steel or alloy of the same brand, smelted in one cycle of a single production process, spilled into several ingots or continuously cast blanks.

4.1.15 state after hot deformation, hot-finished condition: The state of delivery of the product after plastic deformation at a certain temperature and speed, at which, along with deformation, recrystallization occurs, preventing deformation hardening.

4.1.16 condition after cold deformation, cold-hardened condition: The state of delivery of a product whose mechanical properties are obtained as a result of the final cold deformation without subsequent heat treatment.

Notes

1 Final cold deformation is the plastic deformation of the metal at a temperature below the recrystallization temperature at which deformation hardening takes place.

2 The degree of cold deformation is determined by the specified level of strength for each grade of steel or alloy specified in Table A.3 (Annex A).

4.1.17 wall thickness: Nominal wall thickness indicated when ordering products.

4.1.18 tubular billet for coupling (coupling stock): thick-walled seamless pipe used for making several coupling workpieces.

NOTE — In the national industry, a coupling blank is a blank for uncoated couplings used to make one coupling.

4.1.19 pipe: The common name for a casing, tubing and a short pipe.

4.1.20 shortened tube (pup joint): The casing or tubing length less than the lengths provided for group 1.

4.2 Notations

The following symbols are used in this standard:

 — cross-sectional area of the tensile test specimen, mm ;

 — impact work in a Charpy impact test of a V-notch specimen, J;

 — the outer diameter of the product, mm;

 — inside diameter of the product, mm;

 — minimum elongation at the calculated length of 50.0 mm,%;

 — coefficient (for hydrostatic testing), equal to 0.8 for all strength and size groups;

 — weight of 1 m of the product, kg / m;

 — mass fraction of the element in the chemical composition,%;

 — hydrostatic test pressure, MPa;

 — ultimate strength, MPa;

 — yield strength (with a disproportionate elongation of 0.2%), MPa;

 — maximum yield strength, MPa;

 — minimum yield strength, MPa;

 — distance between plates in the flattening test,%;

 — thickness of the product wall, mm;

 — critical wall thickness, mm.

4.3 Abbreviations

The following abbreviations are used in this standard:

 — coefficient for austenitic alloys based on iron grade 3;

 — coefficient for austenitic alloys based on nickel class 4;

AOD — argon-oxygen decarburization;

CH — products in the cold-deformed state, cold-deformed products;

CRA — corrosion-resistant steel or alloy;

EDX — energy-dispersed X-ray spectrometry;

EMI — electromagnetic monitoring;

ESR — electroslag remelting;

HF — products in hot-deformed condition, hot-deformed products;

HRC — C Rockwell hardness;

L — longitudinal sample;

MT — magnetic particle inspection;

NA — not applicable;

PRE — equivalent index of resistance to pitting corrosion;

PSL — the level of requirements for products;

QT — state after quenching and tempering (improvement);

SA — state after annealing to solid solution (annealing);

T is a transverse sample;

UT — ultrasonic testing;

UNS is a single numbering system;

VAD — vacuum-arc degassing;

VAR — vacuum-arc remelting;

VIM — vacuum induction smelting;

VOD — vacuum-oxygen decarburization.

5 Information provided by the consumer

ATTENTION — Responsibility for selecting the level of requirements for products (PSL-1 or PSL-2), class of corrosion-resistant steels and alloys (CRA), strength group, grade of steel or alloy, condition of delivery and other requirements that are additional to those established in the present standard, to ensure the compliance of products with operating conditions is imposed on the consumer. To establish the specific requirements for products intended for operation in a medium containing hydrogen sulfide, it is recommended to use the standards ISO 15156 (all parts) or NACE MR 0175 / ISO 15156 (see Annex E).

5.1 In the order, the consumer must indicate the following information in accordance with the references given:

a) the number of products;

b) product name:

— Pipe blank for couplings;

— casing or tubing without threads;

— casing or tubing without threads with disembarkation (the customer must provide a drawing of the landing and specify the size of the mandrel for inspection);

c) the designation of this standard;

d) grade of steel or alloy and strength group (tables A.2 and A.3, annex A);

e) Outer diameter and wall thickness of the pipes (Table A.15 or special);

f) the outer diameter and wall thickness of the tube blank for couplings in millimeters (special);

g) length group (8.2, table A.16, annex A or special);

h) length of tube blank for couplings (special);

(i) Critical wall thickness for testing a pipe billet for impact bends (7.4.2);

j) the limiting deviations of the outer diameter, wall thickness and mass of the pipe blank for the couplings (8.3.1);

k) the need for acceptance by the customer’s representative (Annex C).

5.2 At its option, the consumer may specify the following requirements in accordance with the following references:

a) chemical composition and limiting deviations of the mass fraction of elements for materials of the PSL-1 level (7.1);

b) mechanical properties at tension at an elevated temperature (7.2);

c) PSL-2 level (annex E). If the PSL-2 level is not specified, then the products are delivered at the level of PSL-1;

d) the test temperature for impact bending, if it is below minus 10 ° C (7.4.6);

e) the special state of the surface (7.10);

(f) The second method for non-destructive testing of the outer surface for articles of Class 1 steel (9.16.9);

(g) Control of reduction of surface chromium content (9.3.3);

h) protection of the surface of articles of Class 1 steel (clause 12);

(i) hydrostatic testing (7.12 and 9.14);

j) testing of corrosion resistance (7.8);

k) the share of ferrite for steel 03X1ZN (7.9.1);

I) the size of the alternative mandrel (8.3.4);

m) calibration of the ends by cold expansion (6.3.2);

n) additional marking in the specified format (11.1);

o) protection of the surface of articles of Class 1 steel for long-term storage (12.2);

p) for alloy UNS N06975 — limit the sum of the mass fractions of molybdenum and tungsten not less than 6% (Table A.28, annex A);

q) additional flattening test for alloy products of classes 3 and 4 (7.7).

6 Method of production

6.1 Manufacture of corrosion-resistant steels and alloys

The steels and alloys specified in this standard must be made by oxygen-converter, electric steelmaking or open-hearth melting method (only for products of steel class 1) with subsequent AOD, VOD, VAR, ESR, VIM or VAD processes.

6.2 Manufacture of articles

The method of production, the initial blank, the state of delivery after cold deformation or heat treatment are indicated in Table A.1 (Appendix A).

When pipes are delivered with disassembly, pipes of Class 2 steel, supplied in the state after annealing, and pipes of Class 1 steel after disembarkation must be heat-treated along the entire length.

When carrying out heat treatment of products, the manufacturer must apply a process control plan that excludes factors that may lead to a change in the state of the product surface (for example, for articles of materials of classes 2, 3 and 4 — to reduce the surface chromium content of less than 12.0%) and to change the corrosive firmness.

Products made of steel grade 2 are manufactured in the following delivery states:

a) after annealing with rapid cooling in a liquid medium;

b) after annealing with rapid cooling in a liquid medium and subsequent cold deformation.

6.3 Calibration of pipe ends

6.3.1 After final heat treatment, the pipe ends may be calibrated from Class 1 steel, for example by compression or expansion. If the plastic deformation of the pipe ends exceeds 3%, the pipes must be annealed to relieve stress at the appropriate temperature or heat treatment along the entire length in accordance with the documented procedure.

If the manufacturer has documented that the reduction does not adversely affect the corrosion resistance of the products, then, as agreed between the manufacturer and the customer, the pipes of Class 1 steel may be cold-reduced with plastic deformation exceeding 3% without subsequent heat treatment.

If the pipe ends are calibrated before the final heat treatment of the pipes along the entire length, it is allowed not to subject the pipes to annealing to relieve stresses.

6.3.2. It is allowed to calibrate the ends of pipes from materials of classes 2, 3 and 4 by methods of cold reduction or expansion prior to tapping. However, the calibration of the pipe ends by cold expansion is carried out only if it is agreed between the manufacturer and the consumer.

Notes

1 Annealing to relieve the stresses of pipes from two-phase steels can lead to the formation of a sigma phase.

2 Calibrating the ends can reduce the corrosion resistance of the pipes specified in this standard.

6.4 Edit

It is not allowed after the final heat treatment to cold stretch by stretching or expanding the pipes of Class 2 steel supplied in the state after annealing and pipes of martensitic steel of Class 1, unless such deformation is a normal component of the straightening of the pipes and does not exceed 3%.

If necessary, pipes of Class 1 steel shall be subjected to hot rotational correction with a finishing temperature of at least 400 ° C if the order does not indicate a higher temperature. Cold rotational straightening of pipes with subsequent annealing is possible to relieve stresses at temperatures not lower than 510 ° C.

It is allowed to straighten the pipes on a regular press with plastic deformation, not exceeding 3%.

6.5 Processes requiring validation

The final operations performed in the manufacture of products that affect their compliance with the requirements of this standard (except for chemical composition and dimensions) must undergo a validation procedure.

Processes that require validation:

— non-destructive testing (9.16.8);

— Final heat treatment (including final heat treatment before any cold deformation);

— cold deformation, if applicable.

6.6 Traceability

The manufacturer shall establish and maintain procedures for maintaining the identity of the original smelting, melting after remelting and / or batch, before completing all the tests required for them and obtaining results that comply with the requirements of this standard.

7 Technical requirements

7.1 Chemical composition

Table A.2 (Annex A) gives the chemical composition of steels and alloys for products of the PSL-1 level.

Table A.28 (Annex A) gives the chemical composition of steels and alloys for products of the PSL-2 level.

For products of the PSL-1 level, the chemical composition and limit deviations of the mass fraction of elements coordinated between the manufacturer and the consumer must be specified in the order.

In accordance with this standard, articles of Class 2 steel shall exhibit pitting corrosion resistance meeting the requirements specified in Table A.2 for articles of the PSL-1 level or in Table A.28 for products of the PSL-2 level.

7.2 Tensile properties

The mechanical properties at room temperature of products manufactured according to this standard shall meet the requirements specified in Table A.3 for products of the PSL-1 level and in Table A.27 for products of the PSL-2 level.

In addition, the products must comply with the requirement specified in list a) or b):

a) the tensile strength of the product shall exceed the specified minimum yield strength by 70 MPa;

b) if the product does not comply with the requirement of a), the difference between the measured tensile strength and the yield strength of the product shall be not less than 35 MPa. The reduction of this difference to less than 35 MPa is permitted by agreement between the manufacturer and the consumer.

If the consumer requires testing of mechanical properties at elevated temperatures, the level of properties and the test procedure must be agreed between the manufacturer and the consumer.

7.3 Hardness

The hardness of products manufactured according to this standard must meet the requirements given in Table A.3 for products of the PSL-1 level and in Table A.27 for products of the PSL-2 level.

The variation in hardness over the wall thickness must meet the requirements specified in Table A.4.

The individual hardness value should not exceed the specified average hardness value by more than 2 HRC.

7.4 Properties in the Charpy impact test of V-notch specimens. General requirements

7.4.1 Evaluation of test results

The test is subjected to a set of three samples from one product selected for testing. The average value of the test results of the three samples should not be lower than the minimum impact value specified in 7.5 and 7.6. For one of the samples, the shock of a less than the specified minimum value is allowed, but not less than two thirds of the set value.

To determine whether these requirements are met, the test result is rounded to an integer. The value of the impact work for a set of samples (i.e., the average value from the test results of three samples) is also indicated as an integer, if necessary, rounded. Rounding is performed in accordance with the rounding method according to ISO 80000−1 or ASTM E 29.

7.4.2 Critical wall thickness

The minimum impact values are set for the critical thickness of the product wall. For a pipe, the critical wall thickness is the nominal wall thickness. For pipe billets for couplings, the critical wall thickness must be specified in the order.

The critical thickness of the wall of the pipe blanks for the couplings must be not less than the calculated wall thickness of the coupling in the plane of the end of the nipple (with mechanical screwing of the joint).

7.4.3 Size, orientation and order of sample selection

If transverse samples of a full size (10x10 mm) can not be manufactured, the largest possible smaller sample shown in Table A.5 (Annex A) should be made. If tests can not be carried out using one of these transverse specimens, then for the articles of Class 1 steel, the largest possible longitudinal specimen shown in Table A.6 should be used, and for products of Class 2, 3 and 4 material, a test on flattening. The procedure for selecting samples for impact bending tests in orientation and dimensions is given in Table A.6.

Table A.7 (for transverse specimens) and Table A.8 (for longitudinal specimens) show the calculated wall thickness required for machining full-size specimens or smaller specimens for impact bending tests (see Table A.5). For these tables, the largest of the impact test specimens shall be selected with a design wall thickness less than the specified wall thickness of the pipe or tube billet for the couplings.

7.4.4 Alternative-sized impact bending specimens

At the manufacturer’s choice, instead of samples of the smallest size specified in Table A.7 or in Table A.8, it is allowed to use sample sizes alternative to those given in Table A.5. However, the alternative sample should be selected in accordance with the sample selection procedure given in Table A.6, and the required impact work should be adjusted to take into account the orientation and size of the sample.

7.4.5 Samples of a smaller size

The impact work of the impact test of smaller specimens shall not be less than the specified minimum value for full-size samples multiplied by the reduction factor given in Table A.5.

7.4.6 Test temperature

The tests should be carried out at a temperature of minus 10 ° C. At the request of the customer, specified in the order, or at the manufacturer’s option, testing of any material can be carried out at an alternative, lower temperature. The maximum deviation of the test temperature is ± 3 ° С.

7.5 Properties in the Charpy impact test of V-notch specimens. Requirements for impact work for pipe blanks for couplings

7.5.1 General

Tubular blanks for couplings that can be used to cut several types of joints must be tested to meet the highest requirements.

7.5.2 Requirements for all materials

Shock Performance Requirements For full-size samples, see tables A.9-A.11. The required values are calculated using the formulas given in Table 1,

Where  — established maximum yield strength, MPa;

 — critical wall thickness (7.4.2), mm.


Table 1 — Formulas for calculating the impact requirements for workpieces for couplings for testing samples of full size

7.6 Properties of the Charpy V-notch impact test. Punch work requirements for pipes

Shock Performance Requirements For full-size samples, see tables A.12-A.14. The required values are calculated using the formulas given in Table 2,

Where  — established maximum yield strength, MPa;

 — critical wall thickness (7.4.2), mm.


Table 2 — Formulas for calculating the impact requirements for pipes for testing specimens of full size

7.7 Properties in the flattening test

For products of Class 2, 3 and 4 material, flattening tests are carried out as an alternative test if the outer diameter or wall thickness of the article does not allow cutting a ½-size or larger-sized impact test specimen. As agreed between the manufacturer and the consumer, for alloy products of Classes 3 and 4, the flattening test may be carried out as an additional test, in addition to the impact bend test, for which samples of ½ size or larger size may be manufactured.

If a flattening test is necessary, then products with an attitude from 3 to 15 and spend it until the distance between the plates is equal to or less than the distance calculated by the following formula

, (1)

Where  — distance between plates in the flattening test,%;

 — natural logarithm of the established maximum yield point;

 — Specified maximum yield strength, MPa;

 — The nominal outer diameter, mm;

 — the nominal thickness of the product wall, mm.

If the ratio more or less specified limits, the flattening test shall be agreed between the manufacturer and the consumer.

Each annular sample must be flattened to the maximum distance between the plates specified above.

The load drop before reaching the required flattening should be determined from the diagram of load dependence on the flattening value. A load drop exceeding 5% of the load value preceding the fall is the basis for rejection. If the diagram does not show a load drop exceeding 5%, the cracks should not be the basis for rejection.

7.8 Corrosion resistance

The corrosion resistance testing of the product is not a requirement of this standard. Such a test can be carried out at the request of the customer specified in the order.

7.9 Microstructure

7.9.1. Class 1

For martensitic steels, the delta-ferrite content should not exceed 5%.

For steel 03X13N, ferrite content exceeding 5% is allowed, as agreed between the manufacturer and the consumer.

The microstructure of the steels should not have continuous phase separations along the grain boundaries or the ferrite grid.

7.9.2 Class 2

The microstructure of the steel must be ferritic-austenitic.

The microstructure of the steel should not have continuous phase separations along the grain boundaries. The total content of intermetallic phases, nitrides and carbides should not exceed 1.0%. The content of the sigma phase should not exceed 0.5%.

In steels 02X22N5M3 and 02X25N7M3, the volume fraction of ferrite should be from 40% to 60%.

In steels 02X25N7M4 and 04H26N5M3, the volume fraction of ferrite should be from 35% to 55%.

7.9.3 Classes 3 and 4

The microstructure of the alloys should not have continuous phase separations along the grain boundaries. The total content of intermetallic phases, nitrides and carbides should not exceed 1.0% in total. The content of the sigma phase should not exceed 0.5%.

7.10 Surface condition

On the inner surface of the pipes there should be no scales and residual annealing products. If the customer has special requirements for the surface of the pipes, then they must be agreed and specified in the order. In this case, the consumer must specify the method, periodicity, criteria and scope of control.

7.11 Defects

7.11.1 Pipes

Pipes should not have the following defects:

a) hardening cracks and burns;

b) surface imperfections that reduce the wall thickness to values less than 87.5% of the nominal value for hot-formed articles and 90% for cold-deformed products;

c) linear imperfections of any orientation on the outer or inner surface with a depth of more than 5% of the nominal wall thickness or 0.3 mm, whichever is greater;

d) non-imperfect imperfections, the projection of which on the outer surface has an area of more than 260 mm ;

e) surface imperfections at the outset ends of pipes of any orientation with a depth of more than 5% of the nominal wall thickness at the transitional landing part and coinciding internal and external imperfections in any area resulting in a reduction in the remaining wall thickness of less than 87.5% of the nominal wall thickness;

f) on all products with internal insertion — sharp angles or sharp changes in the cross-section, which can cause the L-shaped tool to hang (see Figure B.3, Annex B).

7.11.2 Tubular blanks for couplings

Tubular blanks for couplings should not have hardening cracks and burns. Tubular blanks for couplings should not have imperfections that disrupt the continuity of the outer surface, having a depth of more than 5% of the wall thickness or leading to an outer diameter or wall thickness beyond the limit values, or such imperfections should be clearly marked. In addition, the requirement given in 7.11.1, enumeration d) applies to pipe billets for couplings.

7.11.3 Process control plan

The manufacturer, taking into account the features of the production technology and the requirements of Section 9, must apply a process control plan that ensures the fulfillment of the above requirements.

7.12. Hydrostatic test

HF, SA and QT pipes must undergo hydrostatic tests, unless otherwise specified in the order.

Testing of CH pipes is carried out by agreement between the manufacturer and the consumer.

Due to possible limitations of the test equipment, the pressure of the hydrostatic test, as agreed between the manufacturer and the consumer, may be limited to 69.0 MPa. In such a case, the manufacturer must have a documented justification for the physical limitation of the capabilities of the equipment for hydrostatic testing. This does not preclude subsequent hydrostatic tests at a voltage of not more than 80% of the yield point in accordance with 9.14.

8 Dimensions, Weights and Limit Deviations

8.1 Outer diameter, wall thickness and mass

8.1.1. The outside diameter, wall thickness and mass of casing and tubing without threads, to which this standard applies, are indicated in Table A.15. The mass values indicated in Table A.15 are calculated using a factor of 1. To determine the mass values of various steels and alloys, the values given in Table A.15 must be multiplied by one of the following factors:

— 0,989 — for martensitic and martensitic-ferritic steels of class 1;

— 1 — for austenitic-ferritic steels of class 2;

—  — for austenitic alloys based on iron grade 3;

—  — for austenitic alloys based on nickel class 4.

Values and must be specified by the manufacturer.

8.1.2. As agreed between the manufacturer and the customer, the pipes may be manufactured in sizes other than those specified in Table A.15.

8.1.3 The pipe diameter of more than 168.28 mm shall be measured with an accuracy of one decimal place after the decimal point. The diameter values in this standard are given with an accuracy of two decimal places after the decimal point to ensure interchangeability.

8.2 Length

Pipes shall be supplied in groups of lengths in the intervals specified in Table A.16.

8.3 Limit Deviations

8.3.1 Limit deviations of the outer diameter, wall thickness and mass

The outer diameter, wall thickness and mass of pipes intended for use as casing and tubing must be within the limits specified in Table A.17.

The limiting deviations of the outer diameter, wall thickness and weight of the pipe blanks for the couplings must be agreed and specified in the order.

8.3.2 Inside diameter

The limiting deviations of the internal diameter are limited by the limiting deviations of the outer diameter and mass.

8.3.3 Straightness

Deviations from straightness should not exceed the following values:

a) deviations from the total straightness — 0.2% of the total length of the pipe, measured from one end to the other, for pipes with a diameter of more than 101.6 mm (Figure B.1, Annex B);

b) deviations from the end straightness — 3.18 mm at a length of 1.52 m from each end of the pipe (Figure B.2, Annex B).

8.3.4 Trimming

Each pipe must be controlled by a mandrel along the entire length. The dimensions of the standard mandrels for casing and tubing are shown in Table A.18.

At the customer’s request, the pipes can be controlled by alternative mandrels. The dimensions of the alternative mandrels are shown in Table A.19.

8.4 Product ends

Products must be supplied with smooth ends. At the ends of the products there should be no burrs, the deviations of the perpendicularity of the ends should not exceed 0.01 .

9 Inspection and testing

9.1. Testing equipment

The manufacturer shall establish and document the necessary calibration intervals and prepare reference standards in order to ensure that all products can be certified to conform to the requirements of this standard.

If the test or measuring equipment subjected to calibration or verification in accordance with the requirements of this standard is used in unusual or unfavorable conditions, which may affect its accuracy, then it must be recalibrated or verified before further use of the equipment.

9.2 Types and frequency of testing

Types and frequency of testing of pipes are indicated in Table A.20.

For truncated pipes made from casing or tubing, testing is not required, provided that these pipes have been tested before, meet the requirements and have not been subjected to heat treatment after that.

9.3 Control of the chemical composition

9.3.1 Chemical analysis

The manufacturer shall provide the results of the chemical analysis of each melting.

The results should include the quantification of the following chemical elements:

— for items of the PSL-1 level, the elements listed in Table A.2, and , , , and ;

— for items of the PSL-2 level, the elements listed in Table A.28;

— for level products and PSL-1 and PSL-2 — any other elements used by the manufacturer to obtain the required product properties.

For the analysis of finished products, the following are selected:

a) for melting steel and alloy not subjected to remelting — two samples;

b) for the melting of steel and alloy subjected to remelting, one sample.

As agreed between the manufacturer and the consumer, samples can be taken from the pipelines.

Sampling is carried out in accordance with ISO 14284.

9.3.2 Test method

The chemical analysis method is chosen by the manufacturer. Usually the method of spectral analysis is used.

In disputable cases, the method of product analysis must be consistent with international standards.

NOTE The list of standards in which chemical analysis methods are indicated, including information on their scope and accuracy, is given in standards [2] — [5].

9.3.3 Control of reduction of surface chromium content for classes 2, 3 and 4

If specified in the order, the surface chromium content should be monitored by energy-dispersive X-ray spectrometry (EDX) or an equivalent method on one sample from the batch (4.1.5). The sample is taken from the product in the final delivery state and no special preparation of the surface takes place before the test. The chromium content on the external and internal surfaces of the sample should be at least 12.0%. A higher minimum chromium content can be agreed between the manufacturer and the consumer.

If the sample does not meet the requirements, two additional samples from the same product are monitored. If the control result of any of the additional samples is unsatisfactory, the manufacturer can inspect each of the remaining products in the inspection lot or recycle the products (i.e., additional etching and / or grinding) and test the batch as new.

9.4. Monitoring of mechanical properties

9.4.1 Inspection lot

The number of products in the inspection lot (4.1.5) must meet the requirements specified in Table A.21.

9.4.2 Sampling and preparation of samples and samples

Samples and samples should be taken from the ends of the products and must comply with the requirements of ISO 377.

9.5. Tensile test

9.5.1 Orientation of samples

Sampling is carried out in a direction that is longitudinal to the axis of the article, in accordance with the requirements of ISO 6892−1 or ASTM A 370.

9.5.2 Test method

The tensile test is carried out at room temperature in accordance with ISO 6892−1 or ASTM A 370.

In the tensile test, the tensile strength is determined , yield strength and the elongation after failure .

The tensile test results shall comply with the requirements of 7.2 and the values specified for the particular material and strength group in Table A.3 for products of the PSL-1 level or in Table A.27 for products of the PSL-2 level.

If this is agreed upon in the order, the tensile test shall be carried out at an elevated temperature in accordance with ISO 783 or ASTM E 21. Yield strength is determined at the temperature agreed upon and indicated in the order. The results of the tensile test must meet the requirements agreed upon and specified in the order.

9.5.3 Recognition of the test as invalid

If any of the tensile test specimens are improperly prepared or defective, it may be rejected and replaced with another sample.

Samples with poor-quality preparation or imperfections of the material detected before or after the tests and not relevant to the test being conducted may be rejected and replaced with other samples from the same product. Samples should not be considered defective only because the results of their tests do not meet the requirements.

9.5.4 Repeated trials

If the result of the tensile test of the product representing the lot does not comply with the specified requirements, the manufacturer may re-test three additional products from the same batch. If the inspection lot consists of three or few products, each product shall be tested. If the results of repeated tests meet the requirements, the lot must be accepted, except for the product that has not been tested.

If the result of repeated tests of at least one of the samples does not meet the established requirements, the manufacturer can test each of the remaining products in the batch. Products that showed unsatisfactory results during testing should be discarded. Samples for retesting are selected in the same way as specified in 9.4.2.

The rejected batch can be re-heat treated and tested as a new batch, if applicable.

9.6 Hardness testing

9.6.1 Samples

The sample for the control in the form of a ring should be cut off from the end of the product selected for inspection. The length of the specimen should not be less than 12.7 mm.

9.6.2 Test method

The control is carried out on the cross-section of the sample in one of the quadrants for hardness control, as shown in Figure B.4. In each position (near the outer surface, in the middle of the wall thickness, near the inner surface) three impressions are made and the average hardness value for each position is determined.

Hardness testing is carried out according to Rockwell in accordance with ISO 6508−1 or ASTM E 18. For monitoring use C scale Rockwell. The average hardness value in each of the positions shall comply with the requirements of 7.3 and the requirements specified in Table A.4 and the hardness requirements specified for materials and strength groups in Table A.3 for products of the PSL-1 level and Table A.27 for products of the PSL-2 level.

The first print on the sample for hardness control is performed approximately in the middle of the thickness of the sample wall in order to improve the sample draft and reduce possible errors. The result of measuring the hardness of this print can be ignored.

9.6.3 Recognition of the test as invalid

If any sample for hardness control is improperly prepared or defective, it may be rejected and replaced with another sample.

Samples with poor-quality preparation or imperfections of the material detected before or after the tests and not relevant to the test being conducted may be rejected and replaced with other samples from the same product. Samples should not be considered defective only because the results of their tests do not meet the requirements.

9.6.4 Repeated hardness test

If the average hardness value does not meet the specified requirements, but exceeds the set value by no more than 2 HRC, three additional prints must be made in the immediate vicinity of it and an additional mean value is determined.

If the additional average hardness value meets the requirements, the product must be accepted.

If the additional average hardness value does not meet the specified requirements, the product must be rejected.

If the product hardness test results exceed the maximum average hardness or hardness spread, the manufacturer can re-inspect three additional products from the same batch, taking samples from the same product ends as during the initial inspection. If the results of the re-inspection meet the established requirements, then the lot must be accepted. If at least one of the samples subjected to repeated control fails to comply with the established requirements, the manufacturer may decide to control each of the remaining batch products or to reject the batch.

The rejected batch can be re-heat treated and tested as a new batch, if applicable.

9.7. Impact bending or flattening test

9.7.1 Samples

a) Samples for the impact bend test are selected in accordance with ASTM E 23 and 7.4−7.6 (see Figure B.5).

The surface of transverse specimens after machining can retain the original curvature of the surface of the product, provided that the requirements specified in Figure B.6 are met.

Samples for impact bending testing from articles of Class 1 steel and annealed products of Class 2 steel shall not be straightened.

Transverse specimens from products of Class 2, 3 and 4 materials subjected to cold hardening can be straightened only by agreement between the manufacturer and the user.

b) The sample for the flattening test shall be in the form of a ring or a piece of the end of the product not less than 50.8 mm long. It is allowed to remove the burrs from the ends of the sample before flattening.

9.7.2 Test frequency

Tests should be conducted at the following intervals:

a) for casing and tubing of Class 1 steel — for each of the ends of two pipes from each heat;

b) for casing and tubing from materials of classes 2, 3 and 4 — for each of the ends of two pipes made from each ingot or continuous casting piece: one pipe made from the top of the ingot or a continuous casting blank, the other from the bottom part of the ingot or continuous casting billet.

At the manufacturer’s discretion, alternate bending or flattening tests may be conducted for each of the ends of two pipes selected arbitrarily from each inspection lot, provided that the manufacturer has a documented procedure for cutting the ends of ingots or continuous castings and confirming the quality of the material, ensuring that the delivered products to the requirements of Annex D. Periodically, material quality checks must be carried out to verify compliance with the established criterion in particular. At the request of the consumer, he must be provided with relevant data;

c) for tubular blanks for couplings — for each end of each tube blank for couplings.

At the manufacturer’s discretion, alternate bending or flattening tests may be conducted for each of the ends of two pipe billets for couplings selected arbitrarily from each inspection lot, provided that the manufacturer does one of the following:

— demonstrate the traceability of all pipe blanks for couplings in the inspection batch to the original billets and confirm that they are not made from the upper and not from the bottom of the ingot or the continuous cast billet;

— will present a documented procedure for cutting the ends of ingots or continuous castings and confirming the quality of the material, ensuring that the delivered products meet the requirements of Annex D. Periodically, material quality checks must be carried out to verify compliance with the established criteria. At the request of the consumer, he must be provided with relevant data.

9.7.3 Impact test method

Testing of samples with a V-notch for impact bending is carried out in accordance with ASTM A 370 and ASTM E 23. Evaluation of the test results is carried out in accordance with 7.4.1.

9.7.4 Test method for flattening

9.7.4.1 Test method

The samples are flattened between parallel plates. For each flattening test, the diagrams of the dependence of the load on the flattening value should be maintained. Diagrams must be identified at each end of the test article.

The annular sample is flattened until the distance between the plates is the same as indicated in 7.7.

The accuracy of the load measurement should be ± 1.0% of the maximum value, and the accuracy of measuring the distance between the plates is ± 1.0% of the original outer diameter of the ring sample. The test records shall include the required accuracy of the load measurement and the distance between the plates. The flattening speed during the test should not exceed 1 cm / min.

9.7.4.2 Acceptance and rejection criteria

The products must meet the requirements given in 7.7.

9.7.5 Repetitive bending test

For Class 1 steels, if a test result of any specimen from one end of the product does not meet the specified requirements, the manufacturer may test three additional samples from the same end of the product. Before sampling for re-testing, the end of the product can be additionally trimmed. The work of impact of each of the samples in the repeated test shall be no less than the established minimum impact work or the product should be rejected.

If the results of the repeated test do not comply with the requirements of this standard, samples from both ends of additional three products from the same lot are tested. If the results of all additional tests meet the established requirements, then the inspection lot must be accepted, except for the product that was originally rejected. If the result of at least one of the additional tests does not meet the established requirements, the manufacturer may conduct separate tests of all other products from the inspection lot or reject the lot. The rejected lot can be re-heat treated and tested as a new batch.

For materials of classes 2, 3 and 4, when testing products made from the top and bottom of the ingot or continuous cast billets, if the result of testing a sample from one end of the product does not meet the specified requirements, the manufacturer may test three additional samples from the same end of the product. Before sampling for re-testing, the end of the product can be additionally trimmed. If the result of testing a sample during a repeated test does not meet the requirements, the manufacturer may again cut the end of the product and conduct another test or reject this product and conduct tests of each of the ends of the remaining products made from this ingot or continuous casting billet. The manufacturer can re-heat the batch of products made from this ingot or continuous cast billet and delivered in the state after annealing and test it as a new batch.

For materials of classes 2, 3 and 4 when testing a product selected arbitrarily from the inspection lot, if the result of testing a sample from one of the ends of the product does not meet the specified requirements, the manufacturer may test three additional samples from the same end of the product, the end of the product is not allowed. The work of impact of each of the samples in the repeated test shall be no less than the established minimum impact work or the product should be rejected. The manufacturer can test each of the ends of the remaining articles made from this ingot or a continuous casting blank. The manufacturer can re-heat the batch of products made from this ingot or continuous cast billet and delivered in the state after annealing and test it as a new batch.

9.7.6 Repeated flattening tests

When testing products made from the top and bottom of the ingot or a continuous casting blank, if the test result of any specimen from one end of the product does not meet the specified requirements, the manufacturer may test two additional samples from the same end of the product. Before sampling for re-testing, the end of the product can be additionally trimmed. If the result of testing a sample during a repeated test does not meet the requirements, the manufacturer may again cut the end of the product and conduct another test or reject this product and conduct tests of each of the ends of the remaining products made from this ingot or continuous casting billet.

When testing a product selected arbitrarily from the inspection lot, if the result of testing a sample from one of the ends of the product does not meet the specified requirements, the manufacturer can test two additional samples from the same end of the product, but the end of the product is not cut off. If the result of testing a sample during a repeated test does not comply with the specified requirements, the manufacturer may reject this product or test each of the ends of the remaining products made from this ingot or continuous casting blank. The manufacturer can re-heat the batch of products made from this ingot or continuous cast billet and delivered in the state after annealing and test it as a new batch.

9.7.7 Recognition of the test as invalid

Samples with poor-quality preparation or imperfections of the material detected before or after the tests and not relevant to the test being conducted may be rejected and replaced with other samples from the same product. Samples should not be considered defective only because the results of their tests do not meet the requirements.

9.8 Microstructure control

9.8.1 Samples

The microstructure of the material is monitored at the cross section of the specimen with a fiber direction longitudinal to the product axis.

The sample should include the entire thickness of the wall of the product and have a length of at least 6 mm.

Samples are taken after the final heat treatment and before cold deformation of the products.

9.8.2 Method of verification

The microstructure of the material is monitored in accordance with ASTM E 562 in at least 30 fields of vision. The volume fraction of ferrite is determined by the same method with an increase of at least 400 .

9.8.3 Retesting

If the results of the control of the microstructure do not meet the established requirements, the manufacturer can retest the three randomly selected items from the batch. With a continuous heat treatment process, products treated at the beginning, middle and end of the heat treatment cycle are selected for testing.

If the results of the re-inspection meet the requirements, the inspection lot must be accepted, except for the product that was originally rejected.

If at least one of the re-inspection results does not meet the established requirements, the lot must be rejected. If the manufacturer can confirm the chance of an unsatisfactory result of the control, he can control the microstructure of each batch product and, based on his results, discard products that do not meet the requirements.

The rejected batch can be re-heat treated and tested as a new batch, if applicable.

9.9 Sizing control

9.9.1 General

Each product should be monitored to verify compliance with the requirements of Section 8.

9.9.2 Outer diameter

The outer diameter is measured using a mechanical measuring device or micrometer at 0 ° and 90 ° positions at each end of the article or with a continuous laser installation at 0 ° and 90 ° positions or spirally in the same direction along the entire length of the product.

The measurement periodicity can be reduced provided that the manufacturer applies a process control plan to confirm compliance with the requirements of this standard.

9.9.3 Wall thickness at the ends of the product

The measurement of the wall thickness is carried out using a mechanical measuring device or a calibrated device for non-destructive testing of appropriate accuracy. In case of disagreement, preference should be given to measurements carried out by a mechanical measuring device. It is necessary to use a mechanical measuring device with contact tips with a cross section of no more than 6.35 mm in diameter. The end of the tip in contact with the inner surface of the product shall be rounded with a radius of at least 3.18 mm and not more than 38.10 mm — for products with an external diameter of 168.28 mm and above, with a radius of not more than  — for products with an outside diameter of less than 168.28 mm. The end of the tip in contact with the outer surface of the pipe must be flat or rounded, with a radius of curvature of at least 38.10 mm.

9.9.4 Pipe Body Wall Thickness

Continuous monitoring of the wall thickness of the body of the pipe should be carried out in accordance with ISO 10543. The coverage of the automatic control shall be at least 25% of the surface of the pipe body. If the length of the pipe is too small to use automatic equipment, manual control of the wall thickness is carried out.

9.10 Verification of the mandrel

9.10.1 Pipes without disembarkation and with external landing

The control is carried out with a standard mandrel with a cylindrical part, the dimensions of which are given in Table A.18 or, if specified in the order, an alternative mandrel, the dimensions of which are given in Table A.19. The edges of the cylindrical part of the mandrel must be rounded in order to facilitate insertion of the mandrel into the pipe. The mandrel must pass freely through the entire tube when it is moved manually or mechanically. In disputed cases, preference is given to advancement of the mandrel manually. The pipe must be cleaned of foreign materials and installed properly to prevent sagging, so that this can not cause rejection when checking the mandrel.

9.10.2 Pipes with internal disembarkation

The control of the mandrel of tubing and casing with internal disembarkation is carried out along the entire length of the pipe prior to disembarkation using a standard mandrel of the dimensions given in Table A.18 or an alternative mandrel with the dimensions given in Table A.19 or with a mandrel of dimensions matched and specified in the order. Control of the mandrel of the pipe ends after the landing is not required.

9.10.3 Coating of the mandrel

The mandrel must have an outer covering or be made of a special non-ferrous material or of the same metal as the tubes to avoid contact with the iron. On the surface of the mandrel, there must be no foreign iron-containing material.

9.11 Length control

The length of each finished product is measured using an automatic or manual device.

9.12 Straightness control

The pipes are visually inspected.

The straightness of pipes having excessive bending or bent ends is checked by:

— a calibration ruler or a string stretched between the ends of the pipe (Figure B.1);

— a verification ruler with a length of at least 1.83 m, supported by the pipe surface outside the bent end (8.3.3 and Figure B.2).

9.13 Determination of the mass

Pipes intended for use as casing or tubing are weighed individually or by weighing lots. To determine compliance with the requirements of Table A.17, the mass of pipes per unit length should be calculated.

9.14. Hydrostatic test

Standard hydrostatic test pressure is calculated according to formula (2) with rounding up to 0.5 MPa. If the conditions given in 7.12 are met, the test pressure may be limited to an upper limit of 69.0 MPa.

, (2)

Where  — coefficient equal to 0.8 for all strength and size groups;

 — Specified minimum yield strength of the pipe body, MPa;

 — nominal wall thickness, mm;

 — The nominal outer diameter, mm.

The pipe is kept under full test pressure for at least 5 seconds.

The test facility must be equipped with devices that guarantee compliance with the requirements for the specified test pressure and the duration of exposure to pressure. The pressure measuring device shall be calibrated with a pressure gage pressure gauge or equivalent device no earlier than four months before each use. Records for calibration and verification shall be retained, as specified in 13.2.

9.15 Visual inspection

9.15.1 General

The products are subject to visual inspection to verify compliance with requirements 7.11 and 8.4. Visual inspection of products should be carried out in accordance with the approved documented procedure.

Visual inspection should be carried out by trained personnel with visual acuity, which ensures the detection of surface imperfections. The manufacturer must have documented lighting standards for visual inspection. The minimum illumination level of the monitored surface should be 500 lux.

The visual inspection should be carried out on the surface of the products after machining, but before coating, if provided.

9.15.2 Pipe body and tube billets for couplings

Each pipe or pipe blank for couplings must be visually inspected along the entire outer surface to identify imperfections.

9.15.3 Pipe ends

Visual control of the internal surface of pipe ends without landing is carried out for a length of at least 2.5 or 450 mm, whichever is the smaller.

Visual inspection of the inner surface of the ends of pipes with disembarkation is carried out at a length not less than the length of the landing, including the transition zone.

Visual inspection is not required if another control method with documented ability to detect defects specified in 7.11 is used.

If the end of the pipe is cut off to remove defects, then after trimming, it must be repeatedly subjected to the same internal surface check as previously performed.

9.15.4 Actions taken on the identified imperfections

On the surface imperfections revealed by visual inspection, take actions in accordance with 9.16.12−9.16.14.

9.16 Non-destructive testing

9.16.1 General

Requirements for non-destructive testing and levels of inspection of pipes and pipe blanks for couplings are set in 9.16.2−9.16.14. The list of compulsory non-destructive testing operations for pipes and pipe blanks for couplings is given in Table A.20. Pipes and pipe blanks for couplings for which non-destructive testing is required (except for visual inspection) shall be subjected to flaw detection at the entire length (from end to end).

Standard methods for non-destructive testing of pipes are the traditional proven methods and provide for non-destructive testing procedures widely used for the inspection of pipe products around the world. However, it is allowed to use other methods and procedures for nondestructive testing, capable of detecting the defects specified in 7.11. The records for non-destructive testing shall be retained in accordance with 9.16.8.

At the manufacturer’s choice, the artificial defects listed in Table A.22 can be oriented at such an angle as to optimize the detection of defects typical of the manufacturing process. To change the orientation, a documented technical rationale must be developed.

If the order specifies the requirement for the consumer to take pipes and / or the presence of the consumer in the course of non-destructive testing, this should be done in accordance with Appendix C.

Satisfactory results of the control carried out in accordance with 9.16 with the help of equipment calibrated for artificial defects specified in Table A.22 should not be considered as a guarantee of conformity of products to the requirements of 7.11.

9.16.2 Non-destructive testing personnel

All non-destructive inspection operations under this standard, other than visual inspection, shall be carried out by non-destructive testing personnel certified in accordance with ISO 11484 or ASNT SNT-TC-1A, the responsibility for monitoring is assigned to level 3 personnel certified by ASNT SNT-TC- 1A or an equivalent document.

9.16.3 Products

Unless otherwise specified, all compulsory non-destructive testing operations must be carried out after the final heat treatment or for HV products after final cold hardening, and after straightening with the following exceptions:

a) for truncated pipes — in accordance with 9.16.4;

b) for articles of Class 1 steel with more than one non-destructive testing method — one of them (with the exception of ultrasonic testing) can be controlled before heat treatment and rotary dressing.

9.16.4 Shorter tubes

For truncated pipes made from casing and tubing of full length, mandatory inspection of the inner and outer surfaces must be carried out before or after cutting to final lengths, provided that thereafter, no disembarkation or heat treatment is performed.

9.16.5 Uncontrolled ends of products

Small sections from both ends of the products remain uncovered by the automatic non-destructive control provided by this standard. In these cases:

a) the uncontrolled ends of the products are cut off;

(b) The uncontrolled ends of the articles are subjected to manual or semi-automatic control, with at least the same degree of control validity as for automatic non-destructive testing (ISO 11496);

c) the uncontrolled ends of articles of Class 1 steel are subjected to magnetic powder inspection of the outer and inner surfaces along the entire perimeter and along the entire length of the uncontrolled ends;

d) the uncontrolled ends of products from Class 2, 3 and 4 materials are subjected to capillary inspection of the outer and inner surfaces along the entire perimeter and the entire length.

9.16.6 Landed ends

The cut ends (including the transition part of the landing) of pipes of all strength groups are subjected after final heat treatment to the non-destructive testing provided for in this standard to detect transverse and longitudinal defects on the external and internal surfaces of the landing, following the acceptance criteria given in 7.11.

9.16.7 Standard samples

To check the signal from artificial defects of the ultrasonic and electromagnetic monitoring equipment, except for the control of delaminations and checking the wall thickness, standard specimens with notches or holes specified in Table A.22 should be used.

An artificial defect to identify delaminations should be a pinched flat-bottomed hole on the inner surface of the product with an area of no more than 260 mm . The form of the artificial defect is determined at the discretion of the manufacturer and should ensure the detection of defects typical for the manufacturing process used by the manufacturer.

The manufacturer may use any documented procedures to establish a reject threshold for ultrasonic or electromagnetic monitoring, provided that artificial defects in Table A.22 can be detected dynamically under normal operating conditions. This ability to detect defects must be confirmed dynamically and at the manufacturer’s choice in the production stream or out of the flow.

Tables A.23 and A.22 show the acceptance levels and artificial defects that the manufacturer must use when setting rejection thresholds for the control of pipes having defects of 7.11, except for delaminations. Artificial defects used in automatic ultrasonic or electromagnetic monitoring shall not be considered as defects with the dimensions described in 7.11, or used by someone other than the manufacturer as the sole basis for rejection of pipes.

When calibrating the equipment for eddy current testing or the method of magnetic leakage flux, the monitoring system should show signals from cuts on the outer and inner surfaces equal to or greater than the reject threshold set by the drilled hole. The control records shall be retained in accordance with 9.16.8.

9.16.8 Records on the capabilities of a non-destructive testing system

The manufacturer must keep records of the NDT system, which confirms the verification of its ability to detect artificial defects used to establish the sensitivity of the equipment.

Verification should include:

a) calculation of the control zone (ie the scanning plan), including control of the wall thickness;

b) suitability for controlled wall thickness;

c) convergence;

d) the orientation of the transducer, which ensures the detection of defects typical for the production process (9.16.1);

e) documentation confirming that defects typical for the production process are identified using non-destructive testing methods in Table A.23;

f) threshold setting parameters.

In addition, the manufacturer must retain the following documentation for:

— working procedures of the non-destructive testing system;

— description of equipment for non-destructive testing;

— information on the certification of personnel of non-destructive testing;

— Dynamic test data confirming that the NDT system has the necessary capabilities in production conditions.

9.16.9 Non-destructive testing of the entire body of articles of Class 1 steel

Products must be exposed to:

— ultrasonic inspection to identify longitudinal and transverse imperfections on the external and internal surfaces with an acceptance level of L2 in accordance with ISO 9303 or ASTM E 213 (longitudinal imperfections) and ISO 9305 or ASTM E 213 (transverse imperfections) and

— ultrasound control to identify delaminations, the projection area of which on the outer surface is not more than 260 mm , in accordance with ISO 10124.

The signal-to-noise ratio should be at least 3: 1, unless otherwise agreed between the manufacturer and the consumer.

NOTE — Preferably, the higher the minimum value that can be specified by the user.


In addition, if specified in the order, the products must be exposed to identify imperfections on the external surface of one of the following controls:

a) control of magnetic flux scattering with acceptance level L2 in accordance with ISO 9402 or ASTM E 570 (longitudinal imperfections) and ISO 9598 or ASTM E 570 (transverse imperfections);

b) eddy current control with an acceptance level of L2 in accordance with ISO 9304 or ASTM E 309;

c) Magnetic particle testing in accordance with ISO 13665 or ASTM E 709.

9.16.10 Nondestructive testing of the whole body of articles from materials of classes 2, 3 and 4

The products are subjected to:

a) ultrasonic inspection to identify longitudinal and transverse imperfections on the outer and inner surfaces with an acceptance level of L2 in accordance with ISO 9303 or ASTM E 213 (longitudinal imperfections) and ISO 9305 or ASTM E 213 (transverse imperfections) and

b) ultrasound inspection to identify delaminations, the projection area of which on the outer surface is not more than 260 mm , in accordance with ISO 10124.

The signal-to-noise ratio should be at least 3: 1, unless otherwise agreed between the manufacturer and the consumer.

NOTE — It is desirable for the consumer to indicate a higher signal-to-noise ratio, however, for such alloys as UNS N 10276, a lower signal-to-noise ratio may be required.

9.16.11 Pipe and tube billets for couplings requiring additional evaluation

If non-destructive testing results in reading above the threshold, an evaluation of the readings in accordance with 9.16.12 should be made, unless it can be confirmed that the imperfections that caused the testimony are not defects described in 7.11.

9.16.12 Estimation of indications

If there is an indication equal to or greater than the rejection threshold, the manufacturer shall evaluate it in accordance with this paragraph or take action on this indication as for the defect in accordance with 9.16.14. Evaluation is performed by NDT certified technicians at Level 1, under the supervision of NDE Level 2 certified inspectors or Level 3 certified inspectors or conducted by NDE Level 2 certified or Level 3 certified inspectors. readings in accordance with documented procedures.

If no imperfections have been found in the area of the original indication, and no explanation has been found for the reason for the indication, the product must be rejected or, at the manufacturer’s choice, repeatedly monitored along the entire length by the same monitoring method or by ultrasonic inspection methods. The equipment can be configured at the manufacturer’s choice for the same sensitivity level as for the initial control, or for a reduced sensitivity, but corresponding to the specified requirements.

To assess the identified imperfections, it is necessary to measure their depth in one of the following ways:

a) using a mechanical measuring device (for example, depth gauge, caliper, etc.). When grinding pipes by grinding or otherwise, to facilitate measurement of the depth of imperfection, the remaining wall thickness shall not decrease to a value less than that specified in 7.11.1, item b), when stripping the pipe blank for couplings, the remaining outer diameter or wall thickness below the minimum value shall not decrease specified in the order. Sharp changes in wall thickness associated with the removal of metal during stripping should be smoothed;

b) ultrasonic (s) method (s) based on time and / or amplitude measurement or other comparable method. Verification of ultrasound equipment should be documented with confirmation of its ability to distinguish imperfections of a larger and smaller size than the established defect size by 7.11.

If the manufacturer and the consumer do not agree with the evaluation of the results of the inspection, any of them may require the performance of destructive testing of products; further actions with respect to such products are given in Appendix C.

On imperfections recognized as defects, actions must be taken in accordance with 9.16.13 and 9.16.14, if applicable.

9.16.13 Actions with regard to pipes with defects

Imperfections that meet the requirements for products and have dimensions not exceeding the size of the defects specified in 7.11 are allowed not to be removed.

Repair welding is not allowed.

With regard to pipes with defects, the following actions can be taken:

a) abrasive cleaning or machining.

Abrasive cleaning or machining of quenching cracks or burns is not allowed.

Other defects should be completely removed by abrasive stripping or machining, with the wall thickness remaining within the limits specified in Table A.17. The sweep radius should exclude sudden changes in the wall thickness of the pipe. Surface roughness after local stripping or machining should be no worse than the roughness obtained when grinding with abrasive wheel number 36 according to ISO 525. The wall thickness after stripping must be checked for compliance with the requirements of 9.9.3 and should be within the specified limits. The manufacturer’s documented procedures for assessing imperfections must take into account the possibility of coincident defects in the stripping or machining area. After removing the defect, a second control of the stripping area should be carried out in accordance with one of the following options:

1) by the same method and with the same sensitivity as in the initial control;

2) by a capillary method in accordance with ISO 12095 or ASTM E 165 or for articles of Class 1 steel with a magnetic particle inspection in accordance with ISO 13665 or ASTM E 709, or

3) other non-destructive testing method or a combination of methods having the same or higher sensitivity than the original non-destructive testing method.

If option 3) is used, the applied method or combination of non-destructive testing methods shall be documented with a sensitivity confirmation no lower than the original control method. In addition, option 3) should take into account that there may be other overlapping defects in this section;

b) the pipe section with the defect is cut off taking into account the requirements for the length of the product;

c) the pipe is rejected.

Pipes with hardening cracks should be rejected.

9.16.14 Actions with regard to pipe blanks for couplings with defects

Imperfections that meet the requirements for products and have dimensions not exceeding the size of the defects specified in 7.11 are allowed not to be removed. Repair welding is not allowed. With regard to the tube blank for couplings with defects, the following actions can be taken:

a) abrasive cleaning or machining.

Abrasive cleaning or machining of quenching cracks or burns is not allowed.

Other defects must be completely removed by abrasive stripping or machining, while the outer diameter should remain within acceptable limits. Abrasive stripping or machining should be carried out in such a way that the smoothed area smoothly goes into the contour of the pipe blank for the couplings. After removing the defect, it is necessary to measure the outer diameter in the stripping area to verify compliance with its established requirements. There should also be a repeated control of the stripping site in one of the following ways:

1) by the same method and with the same sensitivity as in the initial control;

2) by a capillary method in accordance with ISO 12095 or ASTM E 165 or for articles of Class 1 steel with a magnetic particle inspection in accordance with ISO 13665 or ASTM E 709;

3) other non-destructive testing method or a combination of methods having the same or higher sensitivity than the original non-destructive testing method.

If option 3) is used, the applied method or combination of non-destructive testing methods shall be documented with a sensitivity confirmation no lower than the original control method. In addition, option 3) should take into account that there may be other overlapping defects in this section;

b) the location of the defect is indicated.

If the defect can not be removed from the pipe blank for the couplings, if the permissible limits are observed, then the area of the defect should be indicated by a paint in the form of a strip along the circumference of the tubular blank for couplings covering the entire defect location area if the length of this region in the longitudinal direction does not exceed 50 mm; if the length of this area exceeds 50 mm, then it is designated by crossing bands. The color of the strip is established by agreement between the manufacturer and the consumer;

c) the area with a defect is cut off, taking into account the requirements for the length of the product;

d) a pipe blank for couplings is rejected.

Tubular blanks for couplings with hardening cracks should be rejected.

10 Surface treatment

10.1 Class 1

Pipes should be supplied with an internal surface after pickling or shot blasting. Shot blasting should be performed using a shot of stainless steel or aluminum oxide.

The level of shot blasting should be in accordance with ISO 8501−1, Sa 2 ½.

10.2 Classes 2, 3 and 4

Pipes should be supplied with clean outer and inner surfaces.

Cleaning should include the following operations in the specified sequence:

— Degreasing (for cold-worked products);

— washing in water;

— pickling;

— Final washing in pure water with a chloride ion content of less than 200 mg / l.

NOTE — At low concentrations, the milligram / liter unit is approximately equivalent to ppm (parts per million), which is not recommended for use.


At the end of the cleaning cycle, the entire surface of the pipe must be dry.

11 Marking

11.1 General

Products manufactured in accordance with this standard shall bear the marking made by the manufacturer in accordance with this section.

The marking of products should consist of color marking and marking of the data made with paint. Marking by stamping is applied only if it is specified in the order.

The location, sequence and size of the marking marks must comply with the requirements of 11.2 and 11.3. Additional marking, agreed and specified in the order, is allowed. The marking marks must not overlap and should be applied in such a way as not to damage the surface of the product.

11.2 Marking of products

11.2.1 Location and size of the marking

The marking of the data, made by stamping or paint, is placed on the outer surface of each product after color marking.

The height of the marking marks shall correspond to that indicated in Table A.24.

11.2.2. Color marking

If the order does not specify otherwise, the products must have the following color markings:

— two lanes — to identify the brand of material in accordance with Table A.25;

— one strip — to identify the strength group in accordance with Table A.26.

Strips should be located at a distance of not more than 600 mm from the end of the product.

The bands identifying the material mark are placed next to the band identifying the strength group, as shown in Figure B.7.

The width of the strips should be not less than 25 mm, except for couplings with a copper coating of the outer surface, for which the maximum width of the strips should be not less than 12.7 mm.

NOTE Copper coating of the outer surface of the couplings may lead to a reduction in the adhesion of the paint and making it difficult to remove the paint.


The composition of the ink or ink should not have a harmful effect on the products.

11.2.3 Marking by marking

If the order indicates marking, then it must be rounded, branded, or equivalent, and must include individual identification of each product (individual identification number).

11.2.4 Marking with paint or ink

Marking with ink or ink should be applied in the following sequence:

a) the name or trademark of the manufacturer;

b) the designation of this standard;

c) date of manufacture;

d) material grade and strength group;

e) if agreed (see 7.2), — letters TY, after which an agreed value is applied instead of 35 MPa;

f) for items of the PSL-2 level, sign L2 and UNS number; for products according to E.2 — sign L2A (E.3 and E.4, annex E);

g) melting number;

h) Outer diameter and wall thickness;

i) product identification number;

j) the length in millimeters, rounded to an integer value, or in meters with two decimal places after the decimal point;

k) the number of the inspection lot for mechanical and other tests;

I) hydrostatic test pressure (MPa); If the products were not subjected to a hydrostatic test from the manufacturer, two zeros are indicated: 00.

After this marking, additional marking agreed between the manufacturer and the user may be applied.

11.3 Date of manufacture

The date of manufacture of products is indicated in the form of a four-digit number, in which the first two digits correspond to the last digits of the year, the last two to the month of the marking.

12 Protection of the surface of articles of Class 1 steel

12.1. To ensure the protection of the surface during transport, the outer surface of the products must be lacquered.

It is recommended to consider the following:

a) there is no need to remove the protective coating before installing the pipes in the well;

b) the following factors should be evaluated for proper coating:

1) the cleanliness of the pipe surface;

2) coating temperature;

3) the thickness of the protective layer.

After drying, safety devices must be installed on the ends of the pipes or the inner surface of the products must be protected in some other way, however, the safety devices must have a vent to prevent condensation inside the product.

12.2. The external and internal protective coatings and end protectors for long-term storage shall be agreed between the manufacturer and the user.

13 Documentation

13.1 Electronic data

Test reports, acceptance documents and other documents used in electronic form or printed out from the electronic data interchange (EDI) system shall have the same force as the corresponding documents printed by the manufacturer on paper. The content of such documents must comply with the requirements of this standard and the existing agreements between the manufacturer and the buyer with respect to EDI.

13.2 Saving records

Controls and tests that require the retention of records are listed in Table A.20. The manufacturer shall retain these records and they shall be available at the request of the consumer within three years from the date of sale of the products by the manufacturer.

13.3 Quality document

The manufacturer’s quality document shall contain a reference to this standard, on which the products are manufactured, the year of its approval and the level of the PSL. For each purchase order item, the manufacturer must specify the following data in it, if applicable:

a) the specified outer diameter, wall thickness, material class, material grade, strength group, UNS material number (if applicable), production method, heat treatment type or cold deformation method, number of pipes in fusion or inspection lot;

b) the minimum tempering temperature permitted by the documented heat treatment procedure for each batch of products subjected to quenching and tempering;

c) the chemical composition (fusion and products) indicating the percentage by mass of all elements that have limitations or should be specified by this standard;

d) the tensile test results required by this standard, including yield strength, tensile strength and elongation, indicating the orientation of the samples.

The nominal width of the test piece shall be specified if a sample was used in the form of a strip, diameter and design length, if a cylindrical sample was used, or it should be indicated that samples of a full section were used;

e) the results of the impact test, including the test criteria, size, location and orientation of the samples, the nominal test temperature, the measured impact work for each specimen and the average impact performance for each set of samples, if such tests are required by this standard;

f) hardness test results, including each Rockwell hardness value and average hardness value, test criterion and sample location;

g) results of the flattening test;

h) the results of the control of the microstructure, if applicable, the delta-ferrite content, the ferrite volume fraction and / or the percentage of the sigma phase;

i) minimum test hydrostatic pressure and test duration;

j) the results of visual inspection;

k) results of non-destructive testing with indication of the applied control method (ultrasonic, electromagnetic or magnetic particle), type (orientation, external or internal) and the size of the applied artificial defect;

I) indication of compliance with the established requirements of each geometric parameter of products, including diameter, wall thickness, length, straightness, finish (perpendicularity of the ends), as well as the mass and results of the control of the mandrel;

m) the results of all tests or controls conducted at the customer’s request.

14 Loading and unloading operations, packaging and storage

14.1 General

Loading and unloading operations, packaging and storage must correspond to the strength group of products and the requirements for transportation and storage, as well as the requirements of the purchase order.

14.2 Loading and unloading operations

The loading circuit must prevent damage to the products when moving. It is not allowed to use hooks or similar lifting devices to engage the ends of products, or for products made of materials of Classes 2, 3 and 4, products with iron-containing metallic materials should not be contacted.

14.3 Packing

14.3.1 General

Products are packed in boxes or as agreed between the manufacturer and the consumer in another shipping container. To prevent contact between products, plastic or other gaskets should be used, between products and wooden materials — a polymer film with a thickness of at least 0.2 mm. The necessary precautions must be taken to prevent condensation under the polymer film.

The packing material must prevent the products from contacting the iron.

14.3.2 Marking

The package should include:

a) the name or trademark of the manufacturer;

b) the type of products and the designation of this standard;

c) material grade and strength group;

d) level of requirements for PSL products;

e) dimensions;

f) number of products;

(g) Gross mass;

h) the order number;

i) the name and address of the consumer.

14.4 Storage

Products before shipment to the consumer or further machining should be stored in a closed dry place where there are no sources of contamination such as metal dust, splashes of sea water or direct water access.

The surface of the products should not be corroded and the product should not be supplied with corrosion.

Boxes or other shipping containers must be placed at least 100 mm above the floor. When loading, precautions must be taken to avoid damage to the packaging and protective devices.

Appendix A (compulsory). Tables

Appendix A
(required)

Table A.1 — Production method, initial blank, deformation method and type of heat treatment of products

Table A.2 — Chemical composition of steels and alloys for products of the PSL-1 level

Table A.3 — Mechanical properties at room temperature

Table A.4 — Allowable variation in mean hardness

Table A.5 — Permissible dimensions of the specimens for the impact bend test and a reduction factor for calculating the work of impact

Table A.6 — Procedure for selecting samples by orientation and size

Table A.7 — Size requirements for transverse specimens for impact bending tests

Table A.8 — Dimensional requirements for longitudinal specimens for impact bending tests

Table A.9 — Shock performance requirements for impact bending tests in the transverse direction of tube billets for clutches of Class 1 steel

Table A.10 — Shock performance requirements for impact testing in the longitudinal direction for tube billets for clutches of Class 1 steel

Table A.11 — Shock performance requirements for impact bending in the transverse direction for tube billets for clutches of Class 2, 3 and 4 materials

Table A.12 — Shock performance requirements for impact bending in the transverse direction for pipes of Class 1 steel

Table A.13 — Shock performance requirements for impact testing in the longitudinal direction for pipes of Class 1 steel

Table A.14 — Shock performance requirements for impact bending in the transverse direction for pipes of Class 2, 3 and 4 material

Table A.15 — Pipe dimensions and mass

Table A.16 — Length groups

In meters

Table A.17 — Limit deviations of pipe dimensions and weights

Table A.18 — Dimensions of standard mandrels

In millimeters

Table A.19 — Dimensions of alternative mandrels

Table A.20 — Type and frequency of testing of pipes

Table A.21 — Maximum number of items in the inspection lot

Table A.22 — Artificial defects

Table A.23 — Acceptance level

Table A.24 — Height of marking marks

Table A.25 — Color marking of grades of steels or alloys

Table A.26 — Color coding of strength groups

Table A.27 — Mechanical properties at room temperature of products of the PSL-2 level

Table A.28 — Chemical composition of steels and alloys for products of the PSL-2 level

Appendix B (compulsory). Drawings

Appendix B
(required)

Figure B.1 — Measurement of the deviation from the total straightness

1 — stretched string or wire; 2 — pipe

Figure B.1 — Measurement of the deviation from the total straightness

Figure B.2 — Measurement of deviation from the end straightness

1 — straightening ruler; 2 — pipe; 3 — bent pipe end

Figure B.2 — Measurement of deviation from the end straightness

Figure B.3 — Example of a typical L-shaped tool with an angle of 90 °

Figure B.3 — Example of a typical L-shaped tool with an angle of 90 °

Figure B.4 — Hardness control

_______________
External and internal prints are performed at a distance of 2.54−3.81 mm from the corresponding surface as follows:

— with wall thickness up to 7.62 mm inclusive — in one row;

— with a wall thickness exceeding 7.62 to 11.43 mm inclusive — in two rows;

— with a wall thickness exceeding 11.43 mm — in three rows.

If the print is located at a distance of less than 2 the diameter of the print from the edge of the sample (counting from the center of the print) or closer than 3 diameters of the print from the other print (center-to-center distance), this can lead to a measurement error.

The average hardness value is determined from three Rockwell hardness values at one site.

Indications obtained when performing prints in determining Rockwell hardness are called Rockwell hardness values.

1 — imprint in the middle of the wall thickness; 2 — imprint near the outer surface; 3 — imprint near the inner surface; 4 — print unit for hardness control

NOTE The test is carried out in only one quadrant. In this figure, the four quadrants are shown only for the purpose of detailed illustration of the location of the prints.

Figure B.4 — Hardness control

Figure B.5 — Orientation of the specimens for impact testing

1 — longitudinal sample; 2 — transverse sample

Figure B.5 — Orientation of the specimens for impact testing

Figure B.6 — Permissible curvature of the specimen for impact test

_______________
Curvature caused by the outer diameter of the product.

Figure B.6 — Permissible curvature of the specimen for impact test

Figure B.7 — Position of color-coded strips

1 — end face of the product; 2 — bands indicating the brand of the material; 3 — band indicating strength group

Figure B.7 — Position of color-coded strips

Appendix C (mandatory). Inspection conducted by the consumer

Appendix C
(required)

C.1 Notice of inspection

If the inspector representing the consumer has to control the products or be present during the inspection, the manufacturer must notify him of the time of the beginning of the manufacture of the products and the control.

C.2 Access to equipment

An inspector representing the consumer must have unrestricted access during the entire time of order execution to any parts of the enterprise related to the execution of the order. The manufacturer shall provide the auditor with the full opportunity to verify that the products are manufactured in accordance with this standard. Unless stated otherwise in the order, the inspection shall be carried out at the place of manufacture or processing of the products prior to their shipment, and its conduct must not interfere with the production process.

C.3 Compliance

The manufacturer is responsible for compliance with all the requirements of this standard. The consumer has the right to conduct any studies necessary to confirm compliance, and may reject any products that do not comply with this standard.

C.4 Exclusion

Unless otherwise agreed between the manufacturer and the customer, the products accepted at the manufacturer’s enterprise, but which were not in accordance with the established requirements for subsequent monitoring or operation, may be rejected, and the manufacturer must be notified thereof. When conducting destructive tests, any product that does not comply with the requirements of this standard must be rejected. The actions in respect of rejected products must be agreed between the manufacturer and the consumer.

Appendix D (compulsory). Requirements for the quality of the material

Appendix D
(required)

D.1 Quality of the macrostructure of the metal

The control of the macrostructure of the metal should be carried out on the templates from the first and last ingots in the sequential casting of each metal melting. In continuous casting, the control should be carried out on templates from blanks representing the beginning and end of the casting.

The templates shall be etched in accordance with ASTM E 340 at an etching rate corresponding to ASTM E 381 for a conventional smelting metal or ASTM A 604 for a metal to be remelt and the requirements specified in Tables D.1 and D.2.


Table D.1 — Acceptance criteria for the control of the macrostructure by pickling of conventional smelting

Table D.2 — Acceptance criteria for controlling the macrostructure by etching for metal subjected to remelting

If other features, anomalies or serious defects are noted during the control of the macrostructure of the metal after pickling, the metal must be rejected or, if it is permissible, subjected to repeated control, or presented to the consumer for making a decision.

An ingot or continuous castings having an unacceptable quality of a macrostructure shall be rejected or trimmed and re-monitored until the results meet the acceptance criteria. Also, additional control of the microstructure of other ingots or continuous castings from melting, which cause controversy, should be carried out. For continuous casting, if both blanks representing the beginning and end of the casting are discarded, it is allowed to control the macrostructure of the subsequent and previous blanks. If the sequence of workpieces is not tracked or there is no identification of the front and back ends of the workpieces, both ends of each workpiece must be checked.

D.2 Quality of the microstructure of the metal

Control of the microstructure of the metal by contamination with nonmetallic inclusions should be carried out on templates from the first and last ingots in the sequential casting of each metal smelting. In continuous casting, the control should be carried out on templates from blanks representing the beginning and end of the casting.

The microstructure is monitored after etching in accordance with ASTM E 45−05e3 method A on the longitudinal section of forged or rolled specimens. Acceptance criteria corresponding to method A of ASTM E45−05e3 are specified in Table D.3.


Table D.3 — Criteria for Microstructure Acceptance

If any of the templates do not meet the requirements, ingots or continuous cast blanks may be clipped and re-checked until the results meet the acceptance criteria. Also, additional control of the microstructure of the ingots or continuously-cast blanks of the same melting, causing controversy, should be carried out. For continuous casting, if both blanks representing the beginning and end of the cast are discarded, it is allowed to control the microstructure of the subsequent and previous blanks. If the sequence of workpieces is not tracked or there is no identification of the front and back ends of the workpieces, both ends of each workpiece must be checked.

Appendix E (compulsory). Requirements for PSL-2 products

Appendix E
(required)

E.1. General

This appendix lists the requirements for PSL-2 products. Products of the PSL-2 level are manufactured at the request of the consumer or at the discretion of the manufacturer. PSL-2 level requirements are additional to the requirements of the PSL-1 level, which are basic for this standard. In their intended use, products of the PSL-2 level must comply with the requirements of ISO 15156−3, which stipulates that the products must have corrosion resistance and environmental stress cracking resistance, and in accordance with the requirements of which they are certified.

The products of the PSL-2 level can be made of steel and alloy of any brand listed in Table A.2 (Annex A), provided that all the requirements of ISO 15156−3 are met in addition to the requirements of this standard. PSL-2 requirements for marking and labeling of product packaging are given in E.3 and E.4.

ATTENTION — This standard was prepared on the basis of ISO 15156−3: 2003. The responsibility for acquaintance with the changes introduced in ISO 15156−3: 2003 after the publication of this standard is assigned to the consumer and the manufacturer. Therefore, if changes were made in ISO 15156−3: 2003 before the publication of this standard, such changes should be specified in the order to ensure satisfactory performance of the products in the production of oil and gas. Corrosion-resistant steels and alloys (CRA), selected with ISO 15156−3 or NACE MR0175 / IC 15156, are resistant to cracking in the described hydrogen sulphide-containing oil and gas environments, but are not necessarily resistant to cracking in all operating conditions. Responsibility for selecting a CRA suitable for specific operating conditions rests with the user of the equipment. In determining the degree of aggressiveness of hydrogen sulfide-containing media, it is also necessary to consider the effects that equipment may be subjected to when settling or stopping systems and other events.

NOTE Some of the high strength materials listed in Table A.2 (Annex A) can not be supplied as PSL-2 level products because they do not meet the requirements of ISO 15156−3.

E.2 Items of the PSL-2 level

Steels and alloys of different strength groups listed in Table A.2 (Annex A) are evaluated for compliance with the applicable requirements of ISO 15156−3. Also take into account the documented information on supplies (provided by manufacturers) and on the operation of products as well pipes (provided by consumers). On their basis,

— Table A.27 (Annex A), which shows the specific mechanical properties of the tensile and hardness of the products;

— Table A.28 (Annex A), which lists the specific chemical compositions of the article materials (identified by UNS numbers) taken from NACE MR0175 / IC 15156−3, part 3, annex D.

In the preparation of Tables A.27 and A.28, the ISO / TC Working Group 67 / SC 5 / WG 3 took an intentionally conservative position to avoid the use of products inappropriately; therefore the requirements in these tables are in some cases more stringent than in ISO 15156−3.

Taking into account the experience of successful laboratory tests and / or satisfactory operating experience under specific conditions, other values may be established by agreement between the manufacturer and the user, which differ from the values indicated in Table A.27. However, these values must fully comply with the requirements of ISO 15156−3 at the time of agreement. Such products may be designated as products of the PSL-2 level, but shall be marked in accordance with the applicable requirements of E.3 and / or E.4 (Annex E). In addition, agreed values and relevant test results should be included in the product quality document.

E.3 Marking

For products meeting the requirements of the PSL-2 level, mark L2 with ink or ink, as indicated in 11.2.4, enumeration f). Products meeting the requirements agreed between the manufacturer and the customer (E.2), instead of the L2 mark, mark L2A.

E.4 Packaging marking

Products meeting the requirements of the PSL-2 level are marked with L2, as indicated in 14.3.2, enumeration d). Products meeting the requirements agreed between the manufacturer and the customer (E.2), instead of the L2 mark, mark L2A.

E.5 Process for the modernization of chemical composition and / or strength groups

Table A.28 lists the chemical compositions of only those materials from ISO 15156−3 (including Annex D) that have reliably proven themselves in production and use as materials for strength groups with the requirements specified in Table A.27 (Annex A).

If other chemical compounds from ISO 15156−3 are also known to the users of this standard, also well proven, we request that such formulations be submitted to ISO / TC 67 / SC 5 with supporting data to determine whether they can be included in this standard.

If users of this standard believe that any of the chemical formulations listed in Table A.28 (Annex A) or one of the brands currently listed in Table A.28 should be modified or removed from this standard, this should be brought to the attention of ISO / TC 67 / SC 5.

Appendix YES (informative). Comparability of the designations of material grades according to this standard and ISO 13680: 2010

Appendix YES
(reference)

Table YES.1

Appendix DB (informative). Information on the compliance of reference international standards with the national standards of the Russian Federation (and acting as interstate standards)

Appendix DB
(reference)

Table DB.1