GOST R 57423-2017

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  ГОСТ Р 57423-2017

GOST R 57423−2017 Pipe for boiler and heat exchange equipment. Part 2. Seamless steel tubes for pressure purposes more than 6.4 MPa and at a temperature above 400 °C. specifications

GOST R 57423−2017

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

TUBES FOR BOILER AND HEAT EXCHANGE EQUIPMENT

Part 2

Seamless steel tubes for pressure purposes more than 6.4 MPa and at a temperature above 400 °C. specifications

Tubes for boiler and heat exchanging equipment. Part 2. Seamless steel tubes for pressure purposes more 6.4 MPa and temperatures exceeding 400 °C. Specifications

OKS 77.140.75
OKP 13 1900,
13 4400,
13 5100

Date of introduction 2017−09−01

Preface

1 DEVELOPED by the Open joint-stock company «Scientific-production Association «Central research Institute of manufacturing engineering» (JSC NPO «CNIITMASH») and Open joint stock company «Russian scientific research Institute of pipe industry» (JSC «RosNITI»)

2 SUBMITTED by the Technical Committee for standardization TC 357 «Steel and cast iron pipes and cylinders"

3 APPROVED AND put INTO EFFECT by Order of the Federal Agency for technical regulation and Metrology dated March 21, 2017 N 167-St

4 INTRODUCED FOR THE FIRST TIME

Rules for the application of this standard is established in article 26 of the Federal law from June 29, 2015 N 162-FZ «On standardization in the Russian Federation». Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards» and the official text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the upcoming issue of the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (www.gost.ru)

Introduction

This standard was developed in connection with necessity of creation of normative base on pipe for boiler and heat exchange equipment and eliminating the supply of such pipes according to various standards improper purpose.

This standard is developed on the basis of TU 14-ZR-55−2001*"seamless steel Tubes for steam boilers and pipelines» in order to clarify the scope of the pipes, the accuracy requirements of manufacture, description of metal microstructure (scale 1−3 N) and replacement of used standard methods of flaw detection control standards, harmonized with international ones.
________________
* The one referred to here and hereinafter, not shown. For additional information, please refer to the link. — Note the manufacturer’s database.

This standard is part of a complex of standards of tubes for boiler and heat exchange equipment.

1 Scope

This standard applies to seamless hot-deformed and cold-deformed pipes of non-alloy and alloy steels for the manufacture of boiler and heat exchange equipment and pipelines, operating under pressure of more than 6.4 MPa and at a temperature above 400 °C.

Tubes according to this standard can also be applied for manufacturing equipment and pipelines operating under pressure of more than 6.4 MPa at a temperature of 400 °C and pressure not more than 6.4 MPa at a temperature above 400 °C.

Note — In some cases, pipes under this standard can be applied to work under pressure not more than 6.4 MPa and at temperatures not above 400 °C.

2 Normative references

This standard uses the regulatory references to the following standards:

GOST 166 Calipers. Specifications

GOST 1778 Steel. Metallographic methods of determination of nonmetallic inclusions

GOST 2015 smooth unregulated Gauges. Technical requirements

GOST 2216 Gauges-adjustable bracket smooth. Specifications

GOST 3728 Pipe. Test method for bend

GOST 3845 Pipe metal. Test method hydraulic pressure

GOST 5632 Alloyed stainless steels and alloys corrosion-resistant, heatresistant and heat-proof. Brand

GOST 5639 Steel and alloys. Methods of detection and determination of grain size

GOST 5640 Steel. Metallographic method for the evaluation of microstructure of sheets and strips

GOST 6032 Steels and alloys corrosion-resistant. Methods of test for resistance to intergranular corrosion

GOST 6507 Micrometers. Specifications

GOST 7502 metallic measuring tape. Specifications

GOST 7565 Iron, steel and alloys. Sampling method for determination of chemical composition

GOST 8026 Line calibration. Specifications

GOST 8694 Pipe. The test method for distribution

GOST 8695 Pipe. Test method for flattening

GOST 9012 Metals. Method of measuring hardness Brinell hardness

GOST 9454 Metals. Test method for impact strength at low, room and elevated temperatures

GOST 10006 Pipe metal. Test method tensile

GOST 10145 Metals. Test method for long-term strength

GOST 10243 Steel. Test methods and evaluation of the macrostructure

GOST 10692 Pipe steel, cast iron and fittings to them. Acceptance, marking, packing, transportation and storage

GOST 11358 Thickness and stenkomer indicator with a scale division of 0.01 and 0.1 mm. specifications

GOST 14810 plug Gauges smooth two-sided with inserts of diameter over 3 to 50 mm. Design and dimensions

GOST 16504 System of state testing products. Testing and quality control. Key terms and definitions

GOST 18360 Gauges-bracket sheet for diameters from 3 to 260 mm. Dimensions

GOST 18365 Gauges bracket sheet with changeable lips for diameters over 100 to 360 mm. Dimensions

GOST 19040 Pipe metal. Method of tensile tests at elevated temperatures

GOST 26877 metal Products. Methods of measuring form deviations of

GOST 28548 steel Tubes. Terms and definitions

GOST 30415 Steel. Non-destructive testing of mechanical properties and microstructure of steel products by magnetic method

GOST 30432 Pipe metal. Methods of sampling, blanks and samples for mechanical and technological tests

GOST 31458 Pipe steel, cast iron and fittings to them. Documents on acceptance inspection

GOST R ISO 10893−2 seamless steel Tubes and welded. Part 2. Automated control of eddy current technique for defect detection

GOST R ISO 10893−3 seamless steel Tubes and welded. Part 3. The automated control method of magnetic flux leakage across the surface of pipes made of ferromagnetic steel for detection of longitudinal and (or) transverse defects

GOST R ISO 10893−8 seamless steel Tubes and welded. Part 8. Ultrasonic method of automated control for detection of delamination

GOST R ISO 10893−10 seamless steel Tubes and welded. Part 10. Ultrasonic method of automated control for the detection of longitudinal and (or) transverse defects over the entire surface

GOST R ISO 10893−12 seamless steel Tubes and welded. Part 12. Ultrasonic method of automatic control of wall thickness around the entire circumference

GOST R 55942 steel Tubes. Trim the ends of pipes and fittings for welding. General technical requirements

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for the current year. If replaced with a reference standard, which was given an undated reference, then it is recommended to use the current version of this standard, taking into account all enabled in this version modifications. If replaced with a reference standard, which is given a dated reference, it is recommended to use the version of this standard referred to above by year of approval (acceptance). If after approval of this standard in the reference standard, which is given a dated reference, a change affecting a provision to which reference, the provision is recommended to be applied without taking into account this change. If the reference standard is cancelled without replacement, the position in which reference is made to him, recommended to be used in part not affecting this link.

3 Terms and definitions

This standard applies the terms from GOST 16504, GOST 28548 [1] in respect of the surface defects and the following terms with respective definitions:

3.1 proficiency tests: the Test conducted by the head of material science organization to confirm the performance, provides performance characteristics of tubes.

Note — In the Russian Federation, head of material science in the field of materials for boiler and heat exchange equipment is JSC «NPO «TSNIITMASH».

3.2 lagging scale: The surface defects in the form of separate sections with loose or loose scale formed in case of violation of technology of heating before rolling, or further heat treatment.

4 Symbols and abbreviations

In this standard the following notation and abbreviations:

 — elongation, %;
 — the number PI taken to equal 3,14159;
 — steel density, g/cm;
 — yield strength, N/mm;
 — tensile strength, N/mm;

the long — term strength, N/mm;

 — relative contraction, %;

Ac — temperature of the beginning of the phase transformation of pearlite into austenite upon heating, °C;

a — length of the specimen, mm;

b — allowance for grinding, mm;

c — coefficient of deformation;

D — outer diameter of pipe, mm;

H — distance between sludinajumi surfaces, mm;

KCU — impact strength, determined on the sample concentrator of U, j/cm;

KCV — impact strength determined on a sample with a hub V, j/cm;

M — weight of 1 m pipe, kg;

S — wall thickness of pipe, mm;

S — the arithmetic mean value of the wall thickness of the pipe taking into account the symmetry of limit deviations, mm.

X — size distribution, %;

PV is a method of smelting with the use of direct reduced iron;

Ø — a method of electroslag remelting.

5 Assortment

5.1 Types of pipes and delivery condition

Tubes are produced seamless hot or cold.

Tubes put in a condition after heat treatment.

5.2 steel grades

Pipes made from steel grades 20, 20-PV, 15ГС, 15KHM, 12KH1MF, 12KH1MF-PV, 12KH1MF-sh, 15H1M1 °F, 12Х2МФСР, 10Х9МФБ, 10Х9МФБ-sh, 10Х9В2МФБР-sh, 12Х11В2МФ, 08Х16Н9М2, 12Х18Н12Т, 10Х13Г12БС2Н2Д2.

5.3 Dimensions

Pipes are made for the external diameter and wall thickness dimensions specified in tables 1 and 2 for the hot pipes, in tables 3 and 4 for cold-drawn pipe, regular accuracy of manufacturing on the outside diameter and wall thickness.

At the customer’s request pipes are made manufacturing high precision in outside diameter and (or) wall thickness.

By agreement between the manufacturer and the customer is allowed to produce tubes of intermediate dimensions within the limits specified in tables 1−4.

By agreement between the manufacturer and the customer is allowed to produce pipes internal diameter and wall thickness dimensions within the limits specified in tables 1−4.

By agreement between the manufacturer, customer and material science head of the organization it is possible to manufacture pipes with sizes beyond the limits specified in tables 1−4.


Table 1 — Dimensions and theoretical weight of 1 m of hot-deformed pipes of steel grades 20, 20-PV, 15ГС, 15KHM, 12KH1MF, 12KH1MF-PV, 12KH1MF-sh, 15H1M1 °F, 12Х2МФСР, 10Х9МФБ, 10Х9МФБ-sh, 10Х9В2МФБР-sh, 12Х11В2МФ

Table 1 continued

End of table 1