ГОСТ Р 55442-2013

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  ГОСТ Р 55442-2013

GOST R 55442−2013 Pipes for boiler and heat exchange equipment. Technical conditions. Part 1. Seamless steel pipes for operation under pressure not exceeding 6.4 MPa and at a temperature not exceeding 400 ° С

GOST R 55442−2013

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

PIPES FOR BOILER AND HEAT EXCHANGE EQUIPMENT

Technical specifications

Part 1

PIPES STEEL SEAMLESS FOR WORKING UNDER PRESSURE NOT MORE than 6,4 MPa AND AT TEMPERATURE IS ABOVE 400 ° C

Tubes for boiler and heat exchanging equipment. Specifications. Part 1. Seamless steel pipes to work pressure not more than 6.4 MPa and at temperatures not exceeding 400 ° C

GCS 77.140.75
OKP 13 1900,
13 4400,
13 5100

Date of implementation 2013−12−01

Foreword

1 was developed by the Open Joint-Stock Company «Research and Production Association» Central Research Institute of Machinery Technology «(JSC» NPO TsNIITMASH «) and PC 2» Seamless pipes «TK 357» Steel and cast iron pipes and cylinders «

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 June 19, 2013 N 164-st

4 INTRODUCED FOR THE FIRST TIME


The rules of application of this standard are set in GOST R 1.0−2012 (section 8). The information on changes to this standard is published in the annual (as of January 1 of the current year) information index «National Standards», and the official text of the amendments and amendments is published in the monthly information index «National Standards». In case of revision (replacement) or cancellation of this standard, the relevant notice will be published in the next issue of the information index «National Standards». The relevant information, notification and texts are also posted in the public information system — on the official website of the Russian Federation’s national standardization body on the Internet (gost.ru)

Introduction

This standard has been developed in connection with the need to create a regulatory framework for pipes for boiler and heat exchange equipment and to exclude the delivery of such pipes to various standards of non-purpose, not fully meeting the requirements of the Rules for the device and safe operation of boiler and heat exchange equipment.

This standard is developed on the basis of special technical conditions TU 14−3-190−2004 «Seamless steel pipes for boiler plants and pipelines» with the addition of steels of grades 09G2S and 10G2, the manufacture of pipes from which for boiler and heat exchange equipment is stipulated by the rules of GOST 8731−74 «Pipes steel seamless hot-deformed — Technical requirements» and TU 14−3-1128−82 * «Pipes steel seamless hot-deformed for gas pipelines of gas-lift systems».
________________
* The specifications mentioned here and below are not given here. For more information, please click here. — Note of the database manufacturer.

This standard is part of a set of standards for pipes for boiler and heat exchange equipment.

Compared with the previously used documents for pipes of specified purpose, this standard clearly defines the scope of the pipes, specifies the requirements for the heat treatment of pipes, adds the ability to control the hardness of the metal pipes, tensile tests at various elevated temperatures, and impact tests at various low temperatures .

1 area of use

This standard applies to cold-deformed and hot-deformed seamless steel pipes made of carbon and low-alloy steels intended for boiler, heat exchange equipment and pipelines operating at a pressure not exceeding 6.4 MPa and at a temperature not exceeding 400 ° C.

2 Normative references

Normative references to the following standards are used in this standard:

GOST R 53383−2009 Pipes, steel, seamless, hot-deformed. Technical specifications

GOST 166−89 (ISO 3599−76) Calipers. Technical specifications

GOST 1050−88 High-quality rolled products, calibrated, with special finishing of the surface of carbon quality construction steel. General specifications

Gauge smooth unregulated. Technical requirements

GOST 2216−84 Calibers-staples smooth adjustable. Technical specifications

GOST 3728−78 Pipes. Bending test method

GOST 3845−75 Pipes made of metal. Hydraulic Pressure Test Method

GOST 4543−71 Rolled from alloyed structural steel. Technical specifications

GOST 6507−90 Micrometers. Technical specifications

Measuring Tape Metal. Technical specifications

GOST 7565−81 (ISO 377−2-89) Cast iron, steel and alloys. Method of sampling for chemical composition determination

GOST 8026−92 Testing rulers. Technical specifications

GOST 8694−75 Pipes. Test method for distribution

GOST 8695−75 Pipes. Flattening test method

GOST 9012−59 (ISO 410−82, ISO 6506−81) Metals. Method for measuring Brinell hardness

GOST 9454−78 Metals. Test method for impact bending at low, ambient and elevated temperatures

GOST 10006−80 (ISO 6892−84) Metallic pipes. Tensile test method

GOST 10243−75 Steel. Methods of testing and evaluation of macrostructure

GOST 10692−80 Pipes steel, cast iron and connecting parts to them. Acceptance, marking, packaging, transportation and storage

GOST 11358−89 Thickness gauges and stokomery indicator with a division price of 0.01 and 0.1 mm. Technical specifications

GOST 12359−99 (ISO 4945−77) Carbon steels, alloyed and highly alloyed. Methods for determination of nitrogen

GOST 14810−69 Calibres-plugs are smooth, bilateral with inserts of diameter from 3 to 50 mm. Design and dimensions

GOST 17410−78 Non-destructive testing. Pipes made of metal, seamless, cylindrical. Methods of ultrasonic flaw detection

GOST 18360−93 Caliber-staples sheet for diameters from 3 to 260 mm. Dimensions

GOST 18365−93 Caliber-staples sheet with replaceable jaws for diameters from 100 to 360 mm. Dimensions

GOST 19040−81 Pipes made of metal. Tensile test at elevated temperatures

GOST 19281−89 (ISO 4950−2-81, ISO 4950−3-81, ISO 4951−79, ISO 4995−78, ISO 4996−78, ISO 5952−83) Rolled steel of increased strength. General specifications

Carbon steel and cast iron, unalloyed. General requirements for analysis methods

Carbon steel and cast iron, unalloyed. Methods for determination of total carbon and graphite

Carbon steel and cast iron, unalloyed. Methods for determination of sulfur

Carbon steel and cast iron, unalloyed. Methods for determination of phosphorus

Carbon steel and cast iron, unalloyed. Methods for determination of silicon

GOST 22536.5−87 (ISO 629−82) Carbon steel and cast iron, non-alloy. Methods for the determination of manganese

Carbon steel and cast iron, unalloyed. Methods for the determination of arsenic

Carbon steel and cast iron, unalloyed. Methods for the determination of chromium

Carbon steel and cast iron, non-alloy. Methods for determination of copper

Carbon steel and cast iron, unalloyed. Methods for the determination of nickel

Carbon steel and cast iron, unalloyed. Methods for determination of aluminum

Carbon steel and cast iron, non-alloy. Methods for determination of titanium

GOST 26877−91 Metal products. Methods for measuring the deviation of the shape

GOST 27809−95 Cast iron and steel. Methods of spectrographic analysis

GOST 28548−90 Steel pipes. Terms and Definitions

GOST 31458−2012 (ISO 10474: 1991) Steel pipes and pipe products. Documents on acceptance inspection

NOTE — When using this standard it is advisable to check the operation of reference standards in the public information system — on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or on the annual information index «National Standards», which was published as of January 1 of this year, and on the issues of the monthly information index «National Standards» for the current year. If you replace the reference standard for which an undated reference is given, then the current version of this standard is recommended, taking into account all changes made to this version. If the reference standard, to which the reference is dated, is replaced, then the version of this standard with the above approval year is recommended. If, following the approval of this standard, a reference is made to the reference standard for which the reference is dated, a change affecting the provision referred to is made, it is recommended that this provision be applied without regard to this change. If the reference standard is abolished without replacement, then the provision in which it is referenced is recommended to apply in a part that does not affect this reference.

3 Terms and definitions

In this standard terms are used in accordance with GOST 28548 and terms according to [1] * with respect to surface defects.
________________
* See Bibliography. — Note of the database manufacturer.

4 Notations and abbreviations

The following notations and abbreviations are used in this standard:

 — outside diameter;

 — thickness of the pipe wall;

 — weight of 1 m of pipe;

 — carbon equivalent;

, , ,  — temporary resistance, yield strength, elongation and relative narrowing — the mechanical properties of the metal, determined during the tensile test;

 — Impact toughness is the mechanical property of a metal, determined during the impact test.

5 Assortment

5.1 Types of pipes and delivery status

Pipes are made seamless hot-deformed or cold-deformed.

Pipes are supplied in a state after heat treatment.

5.2 Steel grades

Pipes are made of carbon steels of grades 10 and 20 in accordance with GOST 1050, of low-alloy steels of grades 10G2 in accordance with GOST 4543 and 09G2S according to GOST 19281.

5.3 Dimensions

Pipes are manufactured according to the outside diameter and wall thickness by the dimensions indicated for the hot-formed pipes in Table 1, for cold-formed tubes — in Table 2, the usual and increased accuracy in diameter and / or wall thickness (see tables 7 and 8).

Table 1 — Outer diameter, wall thickness and theoretical mass of 1 m hot-deformed pipes

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
2.5	3.0	3.5	4.0	4,5	5.0	5.5	6.0	6.5	7.0	7.5	8.0	9.0	10.0	11.0	12.0	13.0	14.0	15.0	16.0	17.0	18.0
25	1.39	1.63	1.86	2.07	2.28	2.47	2.65	2.81	2.97	3.11	3.24	3.35	-	-	-	-	-	-	-	-	-	-
28	1.57	1.85	2.11	2.37	2.62	2.84	3.05	3.26	3.45	3.63	3.79	3.95	-	-	-	-	-	-	-	-	-	-
thirty	1.70	2.00	2.29	2.57	2.83	3.08	3.32	3.55	3.77	3.97	4.16	4.34	-	-	-	-	-	-	-	-	-	-
32	1.82	2.15	2.46	2.76	3.05	3.33	3.59	3.85	4.09	4.32	4.53	4.74	-	-	-	-	-	-	-	-	-	-
38	2.19	2.59	2.98	3.35	3.72	4.07	4.41	4.74	5.05	5.35	5.64	5.92	-	-	-	-	-	-	-	-	-	-
40	2.31	2.74	3.15	3.55	3.94	4.32	4.68	5.03	5.37	5.70	6.01	6.31	-	-	-	-	-	-	-	-	-	-
42	2.44	2.89	3.32	3.75	4.16	4.56	4.95	5.33	5.69	6.04	6.38	6.71	7.32	7.89	-	-	-	-	-	-	-	-
45	2.62	3.11	3.58	4.04	4.49	4.93	5.36	5.77	6.17	6.56	6.94	7.30	7.99	8.63	-	-	-	-	-	-	-	-
50	2.93	3.43	4.01	4.54	5.05	5.55	6.04	6.51	6.97	7.42	7.86	8.29	9.11	9.87	-	-	-	-	-	-	-	-
51	-	3.55	4.10	4.64	5.16	5.67	6.17	6.66	7.13	7.60	8.04	8.48	9.32	10.11	-	-	-	-	-	-	-	-
54	-	3.77	4.36	4.93	5.49	6.04	6.58	7.10	7.61	8.11	8.60	9.08	9.99	10.85	11.67	-	-	-	-	-	-	-
57	-	4.00	4.62	5.23	5.83	6.41	6.99	7.55	8.10	8.63	9.16	9.67	10.65	11.59	12.48	13.32	14.11	-	-	-	-	-
60	-	4.22	4.88	5.52	6.16	6.78	7.39	7.99	8.58	9.15	9.71	10.26	11.32	12.33	13.29	14.21	15.07	15.88	-	-	-	-
76	-	5.40	6.26	7.10	7.94	8.76	9.56	10.36	11.14	11.91	12.67	13.42	14.87	16.28	17.63	18.94	20.20	21.41	22.57	23.68	24.74	25.75
83	-	-	6.86	7.79	8.71	9.62	10.51	11.39	12.26	13.12	13.96	14.80	16.43	18.00	19.53	21.01	22.44	23.82	25.16	26.44	27.67	28.85
89	-	-	7.38	8.39	9.38	10.36	11.33	12.28	13.23	14.16	15.07	15.98	17.76	19.48	21.16	22.70	24.37	25.90	27.37	28.81	30.19	31.52
102	-	-	8.50	9.67	10.82	11.96	13.09	14.21	15.31	16.40	17.48	18.55	20.64	22.69	24.69	26.63	28.53	30.38	32.18	33.93	35.64	37.29
108	-	-	-	10.26	11.49	12.70	13.90	15.09	16.27	17.44	18.59	19.73	21.97	24.17	26.31	28.41	30.46	32.46	34.40	36.30	38.15	39.95
114	-	-	-	10.85	12.15	13.44	14.72	15.98	17.23	18.47	19.70	20.91	23.31	25.65	27.94	30.19	32.38	34.53	36.62	38.67	40.67	42.62
121	-	-	-	11.54	12.93	14.30	15.67	17.02	18.35	19.68	20.99	22.29	24.86	27.37	29.84	32.26	34.62	36.94	39.21	41.63	43.60	45.72
133	-	-	-	12.73	14.26	15.73	17.29	13.79	20.23	21.75	23.21	24.66	27.52	30.33	33.10	35.81	38.47	41.09	43.65	46.17	43.63	51.05
140	-	-	-	-	15.04	16.65	18.24	19.83	21.40	22.96	24.51	26.04	29.08	32.06	35.00	37.88	40.72	43.50	46.24	48.93	51.57	54.16
146	-	-	-	-	15.70	17.39	19.06	20.72	22.36	24.00	25.62	27.23	30.41	33.54	36.62	39.66	42.64	45.57	48.46	51.30	54.08	56,82
152	-	-	-	-	16.37	18.13	19.87	21.60	23.32	25.03	26.73	28.41	31,74	35.02	38.25	41.43	44.56	47.65	50.68	53.66	56.60	59.48
159	-	-	-	-	17.15	18.99	20.82	22.64	24.45	26.24	28.02	29.79	33.29	36.75	40.15	43.50	46.81	50.06	53.27	56.43	59.53	62.59
168	-	-	-	-	-	20.10	22.04	23.97	25.89	27.79	29.69	31.57	35.29	38.97	42.59	46.17	49.69	53.17	56.60	59.98	63.31	66.59
194	-	-	-	-	-	23.31	25.57	27.82	30.06	32.28	34.50	36.70	41.06	45.38	49.64	53.86	58.03	62.15	66.22	70.24	74.21	78.13
203	-	-	-	-	-	-	-	29.15	31.50	33.84	36.16	38.47	43.06	47.60	52.09	56.52	60.91	65.25	69.55	73.79	77.98	82.12
219	-	-	-	-	-	-	-	31.52	34.06	36.60	39.12	41.63	46.61	51.54	56.43	61.26	66.04	70.78	75.46	80.10	84.69	89.23
245	-	-	-	-	-	-	-	-	38.23	41.09	43.93	46.76	52.38	57.95	63.48	68.95	74.38	79.76	85.08	90.36	95.59	100.77
273	-	-	-	-	-	-	-	-	42.72	45.92	49.11	52.28	58.60	64.86	71.07	77.24	83.36	89,42	95.44	101.41	107.33	113.20
299	-	-	-	-	-	-	-	-	-	-	53.92	57.41	64.37	71.27	78.13	84.93	91.69	98.40	105.06	111.67	118.23	124.74
325	-	-	-	-	-	-	-	-	-	-	53.73	62.54	70.14	77.68	85.18	92.63	100.03	107.38	114.68	121.93	129.13	136.28
351	-	-	-	-	-	-	-	-	-	-	-	67.67	75.91	84.10	92.23	100.32	108.36	116.35	124.29	132.19	140.03	147.82
377	-	-	-	-	-	-	-	-	-	-	-	-	81.68	90.51	99.29	108.02	116.70	125.33	133.91	142.45	150.93	159.36
426	-	-	-	-	-	-	-	-	-	-	-	-	92.56	102.59	112.68	122.62	132.41	142.25	152.04	161.78	171.47	181.11
The theoretical mass of 1 m of the pipe is given for reference. NOTE The theoretical mass of 1 m of pipes in kilograms is calculated by the following formula: (1)

Table 2 — Outer diameter, wall thickness and theoretical mass of 1 m cold-formed pipes

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
	0.3	0.4	0.5	0.6	0.8	1.0	1.2	1.4	1.5	1.6	1.8	2.0	2.2	2.5	2.8	3.0	3.2	3.5
5	0.035	0.045	0.056	0.065	0.083	0.099	0.112	0.124	0.129	-	-	-	-	-	-	-	-	-
6th	0.042	0.055	0.068	0.080	0.103	0.123	0.142	0.159	0.166	0.174	0.186	0.197	-	-	-	-	-	-
7th	0.050	0.065	0.030	0.095	0.122	0.148	0.172	0.193	0.203	0.213	0.231	0.247	0.260	0.277	-	-	-	-
8	0.057	0.075	0.093	0.110	0.142	0.173	0.201	0.228	0.240	0.253	0.275	0.296	0.315	0.339	-	-	-	-
9	0.064	0.085	0.105	0.124	0.162	0.197	0.231	0.262	0.277	0.292	0.320	0.345	0.369	0.401	-	-	-	-
10	0.072	0.095	0.117	0.139	0,182	0.222	0.26	0.297	0.314	0.332	0.364	0.395	0,426	0,462	0.497	0.513	0.537	0.561
eleven	0.079	0.105	0.129	0.154	0.201	0.247	0.29	0.331	0.351	0.371	0.408	0.444	0,477	0.524	0.566	0.592	0.616	0.647
12	0.087	0,114	0.142	0.169	0.221	0.271	0.32	0.366	0.388	0.410	0.453	0.493	0.532	0.586	0.635	0.666	0.694	0,734
13	0.094	0.124	0.154	0,184	0.241	0.296	0.349	0.401	0.425	0.450	0.497	0.543	0.586	0.647	0.704	0,740	0.773	0,820
14	0.101	0.134	0.166	0,198	0.260	0,321	0.379	0.435	0,462	0.489	0.542	0.592	0.640	0.709	0.773	0.314	0.852	0.906
15	0.109	0.144	0.179	0.213	0.280	0.345	0.408	0.470	0,499	0.529	0.586	0.641	0.694	0.771	0.842	0.888	0.931	0.993
16	0.116	0.154	0.191	0.228	0.300	0.370	0.438	0.504	0.536	0.568	0.630	0.691	0,749	0,832	0.911	0.962	1.010	1.079
17th	0.124	0.164	0.203	0.243	0.32	0.395	0.468	0.539	0.573	0.608	0.675	0,740	0.803	0.894	0.981	1,036	1.089	1,165
18	0.131	0.174	0.216	0.258	0.339	0.419	0.497	0.573	0.610	0.647	0.719	0,739	0.857	0.956	1.050	1.110	1,168	1,252
19	0.138	0.183	0.228	0.272	0.359	0.444	0.527	0.608	0.647	0.687	0,764	0,838	0.911	1,017	1,119	1.184	1.247	1.338
20	0.146	0.193	0.240	0.287	0.379	0.469	0.556	0.642	0.684	0,726	0.308	0,838	0.966	1.079	1,188	1,258	1,326	1.424
21	-	0.203	0.253	0.302	0.399	0.493	0.536	0.677	0.721	0,765	0.352	0.937	1.020	1.141	1,257	1,332	1.405	1,511
22	-	0.213	0.265	0.317	0.418	0.518	0.616	0,711	0.758	0.305	0.397	0.936	1,074	1,202	1,326	1.406	1.448	1.597
23	-	0.223	0.277	0.331	0.438	0.543	0.645	0.774	0.795	0.344	0.941	1,036	1,129	1,264	1.395	1.480	1.563	1.683
24	-	0.233	0.290	0.346	0.458	0.567	0.675	0.780	0,832	0.384	0.985	1.035	1.183	1,326	1,464	1.554	1,641	1,769
25	-	0.243	0.302	0.361	0,477	0.592	0.704	0.815	0.869	0,923	1.030	1.134	1.237	1.387	1.533	1.628	1,720	1.856
26th	-	0.253	0.314	0.376	0.497	0.617	0,734	0.849	0.906	0.963	1,074	1.184	1.291	1.449	1,602	1,702	1,800	1.942
27th	-	0.262	0.327	0.391	0.517	0.641	0,764	0.884	0.943	1,002	1,119	1.233	1.346	1.346	1,671	1,776	1,878	2,028

Continuation of Table 2

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
	4.0	4,5	5.0	5.5	6.0	6.5	7.0	7.5	8.0	8.5	9.0	9.5	10.0	11.0	12.0	14.0	16.0	18.0
5	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
6th	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
7th	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
8	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
9	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
10	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
eleven	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
12	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
13	0.888	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
14	0.986	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
15	1.085	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
16	1.184	1.276	1.356	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
17th	1.282	1.387	1.480	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
18	1.381	1,498	1,603	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
19	1.480	1,609	1,726	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
20	1.578	1,720	1,850	1,967	2,072	-	-	-	-	-	-	-	-	-	-	-	-	-
21	1,677	1,831	1,973	2,102	2.220	-	-	-	-	-	-	-	-	-	-	-	-	-
22	1,776	1.942	2.096	2.238	2,368	-	-	-	-	-	-	-	-	-	-	-	-	-
23	1,874	2,053	2.220	2.374	2,515	-	-	-	-	-	-	-	-	-	-	-	-	-
24	1,973	2,164	2.343	2.509	2.663	2.805	-	-	-	-	-	-	-	-	-	-	-	-
25	2,072	2.275	2,466	2,645	2,811	2,965	3.107	-	-	-	-	-	-	-	-	-	-	-
26th	2,170	2.386	2.589	2.781	2.959	3.125	3,280	-	-	-	-	-	-	-	-	-	-	-
27th	2,269	2,497	2,713	2,916	3.107	3,286	3.453	-	-	-	-	-	-	-	-	-	-	-

Continuation of Table 2

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
	0.3	0.4	0.5	0.6	0.8	1.0	1.2	1.4	1.5	1.6	1.8	2.0	2.2	2.5	2.8	3.0	3.2	3.5
28	-	0.272	0.339	0.405	0.537	0.666	0.793	0.918	0.980	1,042	1,163	1,232	1,400	1,400	1,740	1,850	1.957	2,115
thirty	-	0.292	0.364	0.435	0.576	0,715	0.852	0.987	1.054	1,121	1,252	1.331	1,508	1,508	1,878	1,998	2,115	2,287
32	-	0.312	0.388	0.465	0.616	0,764	0.911	1.056	1,128	1,200	1.341	1,430	1,617	1,617	2.016	2.146	2.273	2,460
34	-	0.331	0.413	0.494	0.655	0,814	0.971	1,126	1,202	1.278	1.429	1.578	1,725	1,725	2,154	2,294	2,430	2,633
35	-	0.341	0.425	0.509	0.675	0,838	1,000	1,160	1.239	1,318	1.474	1.628	1,780	1,780	2.223	2,367	2,510	2,719
36	-	0.351	0.438	0.524	0.694	0.863	1.030	1.195	1.276	1.357	1.518	1,677	1,834	1,834	2,293	2.441	2,588	2.805
38	-	0.371	0,462	0.553	0,734	0,912	1.039	1,264	1,350	1.436	1,607	1,776	1.942	1.942	2,431	2.589	2.746	2,978
40	-	0.391	0.487	0.583	0.773	0.962	1,148	1.333	1.424	1,515	1.696	1,874	2,051	2,051	2,569	2,737	2.904	3.150
42	-	-	-	-	-	1,011	1,207	1.402	1,498	1.594	1,785	1,973	2,159	2,435	2.707	2,885	3,062	3.323
45	-	-	-	-	-	1.085	1.296	1,505	1,609	1,712	1,918	2,121	2.322	2,620	2,914	3.107	3,299	3,582
48	-	-	-	-	-	1.159	1.385	1,609	1,720	1,831	2,051	2,269	2,435	2.805	3,121	3.329	3.535	3.841
50	-	-	-	-	-	1,208	1,444	1,678	1,794	1,910	2,140	2,368	2,594	2,929	3,259	3,477	3,693	4.014
51	-	-	-	-	-	1.233	1.474	1,712	1,831	1,949	2,184	2,417	2.648	2,990	3.328	3,551	3.772	4,100
53	-	-	-	-	-	1.282	1.533	1.782	1.905	2,028	2.273	2,515	2,756	3,114	3,466	3,699	3.930	4,273
54	-	-	-	-	-	1,307	1.563	1,816	1.942	2.068	2,317	2,565	2,810	3.175	3.535	3.773	4.009	4,359
56	-	-	-	-	-	1.356	1.622	1,885	2.016	2,147	2.406	2.663	2,919	3,298	3,674	3,921	4.167	4,532
57	-	-	-	-	-	1.381	1,651	1,920	2,053	2,186	2,450	2,713	2,973	3,360	3.743	3.995	4,246	4,618
60	-	-	-	-	-	1,455	1,740	2,023	2,164	2,304	2,584	2.861	3.136	3,545	3,950	4,217	4,482	4,877
63	-	-	-	-	-	1.529	1,829	2,127	2.275	2,423	2,717	3.009	3,499	3,730	4,157	4,439	4,719	5,136
65	-	-	-	-	-	1.578	1,833	2,196	2.349	2.502	2.806	3.107	3.407	3.853	4,295	4,587	4,877	5,308
68	-	-	-	-	-	1,652	1,977	2,299	2,460	2,620	2,939	3,255	3,570	4,033	4.502	4.809	5,113	5,567
70	-	-	-	-	-	1,702	2,036	2,368	2,534	2,699	3,027	3.354	3,673	4.162	4,640	4,957	5,271	5,740
73	-	-	-	-	-	1,776	2.125	2,472	2,645	2,817	3.161	3.502	3.841	4.347	4.847	5.179	5.508	5,999
75	-	-	-	-	-	1,825	2,184	2.541	2,719	2.896	3,249	3,601	3.930	4,470	4,986	5.327	5,666	6,172
76	-	-	-	-	-	1,850	2,214	2,576	2,756	2,936	3,294	3,650	4.004	4,532	5,055	5,401	5,745	6,258

Continuation of Table 2

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
4.0	4,5	5.0	5.5	6.0	6.5	7.0	7.5	8.0	8.5	9.0	9.5	10.0	11.0	12.0	14.0	16.0	18.0
28	2,368	2,608	2,836	3,052	3,255	3.446	3,625	-	-	-	-	-	-	-	-	-	-	-
thirty	2,565	2,830	3.083	3.323	3,551	3.767	3.971	4.162	4.34	-	-	-	-	-	-	-	-	-
32	2.762	3,052	3.329	3,594	3.847	4,087	4,316	4,531	4,735	-	-	-	-	-	-	-	-	-
34	2.959	3,274	3,576	3.366	4.143	4,408	4,661	4,901	5,129	-	-	-	-	-	-	-	-	-
35	3.058	3.385	3,699	4.001	4,291	4,568	4,834	5,086	5.327	-	-	-	-	-	-	-	-	-
36	3.157	3,496	3,822	4,137	4,439	4,728	5,006	5,271	5,524	-	-	-	-	-	-	-	-	-
38	3.354	3,718	4,069	4,408	4,735	5,049	5.352	5,641	5,919	6,184	6.437	-	-	-	-	-	-	-
40	3,551	3,940	4,316	4,680	5,031	5.369	5,697	6,011	6,313	6,603	6,881	-	-	-	-	-	-	-
42	3,749	4.162	4,562	4,951	5.327	5,690	6,042	6.381	6,708	7,023	7,324	-	-	-	-	-	-	-
45	4,044	4,495	4,932	5,353	5,771	6.171	6,560	6,936	7,300	7,651	7,990	8,317	8,632	-	-	-	-	-
48	4,340	4,327	5,302	5,765	6,215	6,652	7,078	7,491	7,892	8,280	8,656	9,020	9.371	-	-	-	-	-
50	4.533	5,049	5.549	6,036	6,511	6,972	7,423	7,861	8,286	8,699	9,110	9.489	9.865	10.580	11.246	-	-	-
51	4,636	5,160	5,672	6,172	6.659	7.132	7.596	8.046	8,484	8.909	9.322	9,723	10,111	10,851	11,542	-	-	-
53	4,834	5.382	5,919	6,443	6,955	7,453	7.941	8,416	8.378	9.328	9.766	10,191	10,604	11,394	12,133	-	-	-
54	4,932	5.493	6,042	6,573	7,103	7,613	8,114	8,601	9.075	9.538	9,988	10,426	10,851	11,665	12,429	-	-	-
56	5,130	5,715	6,289	6,850	7,398	7,934	8.459	8,971	9.470	9.957	10,432	10.394	11,345	12,207	13,021	-	-	-
57	5,228	5,826	6,412	6,985	7,546	8,095	8,632	9,156	9,667	10,167	10,654	11,128	11.591	12,479	13,317	-	-	-
60	5,524	6.159	6,782	7,392	7,990	8,575	9.149	9,710	10.259	10,796	11.32	11.331	12,331	13.293	14,205	-	-	-
63	5,820	6,492	7,152	7,799	8,434	9,056	9,667	10.265	10,851	11,424	11,985	12,534	13,070	14,106	15,093	-	-	-
65	6,017	6,714	7,398	8,070	8.730	9.377	10.013	10,635	11.246	11,844	12,429	13,003	13.564	14,649	15.685	-	-	-
68	6,313	7,047	7.768	3,477	9.174	9.857	10,530	11,190	11.838	12,473	13,095	13.706	14.304	15,463	16,573	-	-	-
70	6,511	7,269	8.015	3,749	9.470	10.178	10.876	11.560	12,232	12,892	13,539	14.174	14,797	16,005	17,164	-	-	-
73	6,807	7.602	8.385	9,156	9,914	10.659	11,394	12,115	12.824	13.521	14,205	14,877	15,537	16.819	18,052	-	-	-
75	7.004	7,324	8,631	9.427	10,210	10,930	11,739	12,485	13,219	13,940	14,649	15,345	16,030	17,362	18,644	-	-	-
76	7,103	7,935	8.755	9.562	10.358	11,140	11,911	12,670	13,416	14,150	14.871	15,580	16,276	17,633	18,940	-	-	-

Continuation of Table 2

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
0.3	0.4	0.5	0.6	0.8	1.0	1.2	1.4	1.5	1.6	1.8	2.0	2.2	2.5	2.8	3.0	3.2	3.5
80	-	-	-	-	-	-	2.331	2,714	2.904	3.094	3,471	3.847	4,221	4,778	5.331	5,697	6,060	6,603
83	-	-	-	-	-	-	2,420	2,817	3.015	3,212	3.605	3.995	4.383	4,963	5,538	5,919	6,298	6,862
85	-	-	-	-	-	-	2,430	2,886	3,089	3.291	3,693	4,094	4,492	5,086	5,676	6,067	6,455	7,035
89	-	-	-	-	-	-	2,593	3,024	3.237	3.449	3.871	4,291	4.709	5.353	5,952	6,363	6,771	7,380
90	-	-	-	-	-	-	2,623	3.059	3,274	3,488	3,915	4,340	4.763	5,395	6,021	6.437	6,850	7,466
95	-	-	-	-	-	-	2.776	3,232	3.459	3.685	4,137	4,587	5,034	5,703	6.367	6,867	7,244	7,898
100	-	-	-	-	-	-	-	-	3,644	3.883	4,359	4,834	5,306	6,011	6,712	7.176	7,639	8.329
102	-	-	-	-	-	-	-	-	3,718	3.962	4,448	4,933	5,414	6,135	6,850	7,324	7,797	8.502
103	-	-	-	-	-	-	-	-	3,940	4,198	4,714	5,223	5,740	6,504	7.264	7.768	8,270	9,020
110	-	-	-	-	-	-	-	-	4.014	4,277	4.803	5.327	5,849	6,623	7,402	7.916	9.428	9.193
120	-	-	-	-	-	-	-	-	4,384	4,672	5,247	5,820	6.391	7,244	8,093	8,656	9,217	10,056
130	-	-	-	-	-	-	-	-	4.754	5,066	5,691	6,313	6,934	7,861	8.783	9.396	10,007	10,919
140	-	-	-	-	-	-	-	-	-	5,461	5,135	6,807	7,476	8,477	9,474	10,136	10,796	11,782
150	-	-	-	-	-	-	-	-	-	-	6,579	7,300	8.019	9.094	10,164	10.876	11,584	12,645
160	-	-	-	-	-	-	-	-	-	-	-	7,793	8,561	9,710	10,855	11,616	12,374	13.508
170	-	-	-	-	-	-	-	-	-	-	-	8,286	9,104	10.327	11,546	12.355	13,163	14,371
180	-	-	-	-	-	-	-	-	-	-	-	8.779	9.647	10,944	12,236	13,095	13,952	15,235
190	-	-	-	-	-	-	-	-	-	-	-	-	-	-	12,927	13.835	14,742	16,098
200	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	14,575	15,531	16,961
210	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	15,315	16,320	17,824
220	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	16,055	17,109	18,687
240	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
250	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

End of Table 2

Outer diameter of pipes, mm	Theoretical mass of 1 m of pipes, kg, with wall thickness, mm
4.0	4,5	5.0	5.5	6.0	6.5	7.0	7.5	8.0	8.5	9.0	9.5	10.0	11.0	12.0	14.0	16.0	18.0
80	7,497	8.379	9.248	10,105	10.95	11,731	12.602	13,410	14,205	14,988	15.759	16,517	17,263	18,718	20,124	-	-	-
83	7,793	8,712	9.618	10,512	11,394	12,263	13,120	13,965	14,797	15,617	16,425	17,220	18,003	19,532	21,012	-	-	-
85	7,990	8,934	9.865	10.783	11,690	12.584	13,465	14,334	15,191	16,036	16,868	17,688	18,496	20,074	21.603	-	-	-
89	8.385	9.378	10.358	11,326	12,281	13,225	14,156	15.074	15,981	16,375	17,756	18,626	19,483	21,160	22.787	-	-	-
90	8,484	9.489	10,481	11,461	12,429	13.385	14,328	15.259	16,178	17,084	17,978	18,360	19,729	21,431	23,083	-	-	-
95	8,977	10.043	11,098	12,140	13,169	14,187	15,191	16,184	17,164	18,132	19,088	20,031	20,962	22.787	24,563	-	-	-
100	9.470	10.598	11,714	12.818	13,909	14,938	16,055	17,109	18,151	19,180	20,198	21,203	22,192	24,144	26,043	29,692	33.145	36,400
102	9,667	10,820	11,961	13,089	14,205	15,308	16,400	17,479	18,545	19,600	20,642	21,671	22,689	24,686	26,634	30,383	33,934	37,288
103	10.259	11,486	12,701	13.903	15,093	16,269	17,436	18,589	19,729	20.357	21,973	23,077	24,168	26,314	28,410	32,455	36,302	39,952
110	10.456	11.708	12,947	14.174	15,389	16,590	17,781	18.959	20,124	21,277	22,417	23,546	24,662	26,856	29,002	33.145	37,091	40,839
120	11,443	12.818	14,180	15,531	16,868	18,193	19.507	20.308	22,097	23,373	24,637	25,388	27,128	29.569	31,961	36,598	41,037	45,278
130	12,429	13,928	15,413	16,887	18,348	19,796	21,233	22,658	24,070	25,469	26,856	28,231	29.504	32,282	34,921	40,050	44,983	49,718
140	13,416	15,037	16,646	18,243	19,828	21,400	22,960	24.507	26,043	27,565	29.076	30,574	32,060	34,995	37,880	43.503	48,928	54,157
150	14,402	16.147	17,880	19,600	21,308	23,003	24,686	26,357	28,016	29,662	31,295	32,917	34,526	37,707	40,839	46,955	52,874	58,596
160	15,389	17,257	19,113	20,956	22.787	24.606	26,412	28,207	29,988	31,758	33.515	35,260	36,992	40,420	43,799	50,408	56,820	63,035
170	16,375	18.367	20,346	22,312	24,267	26,209	28,139	30,056	31,961	33,854	35,733	37.603	39,458	43,133	46,758	53,861	60,766	67,174
180	17,362	19,476	21,579	23,669	25,747	27,812	29,865	31.906	33,934	35,950	37,954	39,945	41,925	45,346	49,713	57,313	64,712	74,913
190	18,348	20.586	22,812	25,025	27,226	29,415	31,591	33,755	35.907	38,046	40.174	42,288	44,391	48,558	52,677	60,766	68,658	76,352
200	19,335	21,696	24,045	26,332	23,706	31,013	33,313	35,605	37,880	40.143	42,393	44,631	46,857	51,271	55,636	64,218	72.603	80.791
210	20,321	22.806	25,278	27,733	30,136	32,621	35,044	37,455	39,853	42,239	44,613	46,974	49,323	53,984	58,596	67,671	76,549	85,230
220	21,308	23,915	26,511	29,094	31,665	34,224	36,770	39,304	41,826	44,335	46,832	49,317	51,789	56,697	61,555	71,124	80,495	89,669
240	-	26,135	28,977	31,307	34,625	37,430	40,223	43,003	45,772	48,528	51,271	54,002	56,721	62,122	67,474	78,029	88,387	98,547
250	-	27,244	30,210	33,164	36,104	39,033	41,949	44,353	47,744	50,624	53,491	56,345	59,183	64,335	70,433	31,431	92,333	102,986
The theoretical mass of 1 m of the pipe is given for reference. NOTE The theoretical mass of 1 m of pipes in kilograms is calculated by the formula (1).

As agreed between the manufacturer and the customer, the pipes may be manufactured in intermediate dimensions not provided for in tables 1 and 2.

As agreed between the manufacturer and the customer, hot-deformed pipes may be manufactured in accordance with GOST R 53383, more than specified in this standard.

Upon agreement between the manufacturer and the customer, the pipes are manufactured according to the internal diameter and wall thickness, along the outer and inner diameters.

5.4 Length

The length of the pipe produced:

a) Uneven length — in the range from 4,0 to 12,5 mm;

b) dimensional length — within an unlimited length;

c) length, multiple dimensional, — within an unlimited length with an allowance for each cut of 5 mm, if the other allowance is not specified in the order.

As agreed between the manufacturer and the customer, the pipes of a measured length and length, multiple dimensional, may be manufactured in length not provided for in this standard.

5.5 Examples of pipe designation

Conditional symbols for the pipes are formed in accordance with the following examples.

Examples

1 Pipes cold-deformed (X), external diameter 32 mm of usual accuracy, with a wall thickness of 4.5 mm of usual accuracy, measuring length 5000 mm, of steel grade 20, according to GOST R 55442−2013 :

Pipe — X — 32 4,5 5000 — 20 — GOST R 55442−2013

2 Pipes hot-deformed (D), external diameter 168 mm high accuracy, with wall thickness 10.0 mm of increased accuracy, length, multiple of 1500 mm, of steel grade 20, according to GOST R 55442−2013 :

Pipe — G — 168n 10n 1500кр — 20 — GOST R 55442−2013

3 Pipes cold-deformed (X), external diameter 32 mm high accuracy, with a wall thickness of 4.5 mm of usual accuracy, measuring length 6000 mm, of steel grade 09G2S, according to GOST R 55442−2013 :

Pipe — X — 32n 4,5 6000 — 09G2S — GOST R 55442−2013

4 Pipes cold-deformed (X), internal diameter 32 mm of usual accuracy, with a wall thickness of 3.5 mm of usual accuracy, unlimited length, of steel grade 10G2, according to GOST R 55442−2013 :

Pipe — X — вн32 3,5 — 10Г2 — GOST R 55442−2013

5 Pipes cold-deformed (X), external diameter 36 mm of usual accuracy, internal diameter 32 mm of usual accuracy, measuring length 5000 mm, of steel grade 20, according to GOST R 55442−2013 :

Pipe — X — 36 вн32 5000 — 20 — GOST R 55442−2013

5.6 Information specified in the order

5.6.1 When ordering pipes manufactured in accordance with this standard, the customer must specify the following mandatory information in the order:

a) the designation of this standard;

b) type of pipes: hot-deformed or cold-deformed (see 5.1);

c) steel grade (see 5.2);

d) the dimensions of the pipes;

e) accuracy of manufacture (see 5.3, 6.6.1);

e) the length of the pipes (see 5.4);

g) non-destructive testing method (see 6.8.2).

5.6.2 If necessary, the customer may specify the following additional requirements in the order:

a) manufacture of pipes of length, multiple of the dimensional, with allowance on the cut, not provided for in this standard (see 5.4);

b) manufacture of pipes made of steel with a limitation in the chemical composition of the mass fraction of sulfur and phosphorus (see 6.2.2);

c) type of technological test for pipes with an outside diameter of less than 108 mm, with a wall thickness of not more than 9 mm (see 6.5.1);

d) a test for flattening pipes up to 60 mm in diameter, with a wall thickness of not more than 15% of the outer diameter (see 6.5.2);

e) supply of pipes with a wall thickness of at least 5.0 mm with an external chamfer (see 6.9.2);

f) supply of pipes with an external diameter of 108 mm or less, with safety details at the ends of the pipes (see 6.10.3);

g) control of the chemical composition of the metal pipes (see 8.3, table 10);

i) execution of an acceptance inspection document not provided for in this standard (see 8.5).

5.6.3. If necessary, the following additional requirements may be agreed upon between the manufacturer and the customer:

a) manufacture of pipes with intermediate dimensions not provided for in tables 1 and 2 (see 5.3);

b) the manufacture of pipes with dimensions in excess of those specified in this standard, in accordance with GOST R 53383 (see 5.3);

c) manufacture of pipes for internal diameter and wall thickness (see 5.3, 6.6.1);

d) manufacture of pipes for external and internal diameters (see 5.3, 6.6.1);

e) manufacture of pipes of dimensional length and length, multiple dimensional, not provided for by this standard (see 5.4);

f) the manufacture of pipes with the normalization of the yield stress of the metal pipes at a temperature of 350 ° C (see 6.3.2);

g) the manufacture of pipes with the normalization of the yield strength of the metal pipes at a temperature of 400 ° C and the harmonization of the norm (see 6.3.2);

i) manufacture of pipes with a wall thickness of 12.0 mm or more, with the normalization of the toughness of the metal pipes at one or several temperatures: minus 20 ° C, minus 40 ° C or minus 60 ° C (see 6.3.2);

j) manufacture of pipes with a wall thickness of more than 10.0 mm, with a normalization of the hardness of the pipe metal (see 6.3.2);

l) manufacture of pipes with other extreme deviations in external, internal diameters and wall thickness of pipes (see 6.6.1);

m) manufacture of pipes of dimensional length and length, multiple dimensional, with reduced or increased length deviations (see 6.6.2);

n) the manufacture of pipes with the normalization of general straightness and the harmonization of the norm (see 6.6.4);

n) applying a temporary conservation coating (see 6.10.4);

p) packing of pipes in materials with volatile corrosion inhibitors (see 6.10.5);

c) the supply of pipes with additional markings (see 6.10.6);

t) supply of pipes in a special package (see 6.10.7);

y) control of wall thickness along the whole length of the pipe by ultrasonic method (see 8.3, table 10);

f) the dimensions of the longitudinal rectangular risks for non-destructive testing of tubes with a wall thickness of less than 2.0 mm or an internal diameter of 10 mm or less (see 9.13, table 12).

6 Technical requirements

6.1 Method of production

6.1.1 For the production of pipes, a rolled, forged or continuous casting should be used. It is allowed to use ingots smelted using electroslag remelting.

6.1.2 Pipes shall be seamless and made by hot or cold deformation.

6.1.3 The pipes shall be normalized at the temperature specified in Table 3. The normalization of hot-formed pipes from rolling heating at the end-of-rolling temperature not lower than 890 ° C is allowed.


Table 3 — Normalization temperature

Normalization temperature, ° С (± 10 ° С)
at normal heating	at high-speed heating
900−950	900−1050

Allowed for normalization, accelerated fan cooling or spray cooling.

The post-normalization of high-temperature tempering is allowed.

6.2 Chemical composition

6.2.1 The chemical composition of steel grades 10 and 20 shall comply with GOST 1050, steel grade 10G2 — GOST 4543, steel grade 09G2S — GOST 19281.

6.2.2 At the request of the customer, the pipes are made of steel with a limitation in the chemical composition of the mass fraction: sulfur — no more than 0.020%, phosphorus — not more than 0.025%.

6.2.3. The value of the carbon equivalent for steel grades 10Г2 and 09Г2С, calculated by the following formula, should not exceed 0.43%:

, (2)

Where ,  — Mass fraction of carbon and manganese,%.

6.3 Mechanical properties

6.3.1 The mechanical properties of the pipe metal at room temperature shall be as specified in Table 4.


Table 4 — Mechanical properties of metal pipes at room temperature

steel grade	Temporary resistance , N / mm	Yield strength , N / mm	Relative extension ,%	Relative contraction ,%	Impact strength , J / cm
not less than
10	353−550	215	24	55	40
20	410−590	245	21	45	40
10G2	Not less than 421	265	21	50	40
09G2S	Not less than 470	265	21	50	40
When determining the mechanical properties on samples in the form of a segment or a section of a pipe of full cross section, a reduction in the relative elongation by three units from the established norm is allowed, the relative narrowing is not normalized. The impact strength is normalized for pipes with a wall thickness of 12.0 mm or more.

6.3.2. As agreed between the manufacturer and the customer, the pipes are manufactured with one or more additional requirements for the mechanical properties specified in Table 5.


Table 5 — Additional requirements for the mechanical properties of metal pipes

steel grade	Yield strength , N / mm , at a temperature		Impact strength , J / cm , at a temperature			Brinell hardness , HB
350 ° С	400 ° С	minus 20 ° С	minus 40 ° С	minus 60 ° С
not less than					no more
10	130		25			137
20	160	25	156
10G2	180	25	197
09G2S	180	25	197
Impact strength is normalized for pipes with a wall thickness of 12.0 mm or more. The hardness is normalized for pipes with a wall thickness of more than 10.0 mm. The norm is established by agreement between the manufacturer and the customer.

6.4 Macro structure

In the macrostructure of metal pipes with a wall thickness of 12.0 mm or more, cracks, unwound plaque, subcortical gas bubbles, crusts, stratifications, floccents, foreign metallic and nonmetallic inclusions visible without the use of magnifying devices are not allowed.

The manufacturer can guarantee the compliance of the macrostructure of the pipe metal with the specified requirements without monitoring on the basis of the pipe production technology.

6.5 Technological properties

6.5.1 Pipes, depending on the external diameter and wall thickness, must withstand one of the technological tests specified in Table 6.

If two possible types of tests are indicated in Table 6 for the ordered outer diameter and wall thickness of the pipes, the required type of test is indicated by the customer, and in the absence of such indication, the manufacturer chooses.


Table 6 — Types of technological testing of pipes

Outside diameter, mm	Wall thickness, mm	Types of testing
Up to 60 inclusive.	Up to 9 inclusive.	Bend or Hand
More than 9	Bend
60 to 108 inclusive	Up to 9 inclusive.	Distribution or flattening
More than 9, but not more than 15% of the outer diameter	Flattening
More than 9 and more than 15% of the outer diameter	Bend
108 to 273 inclusive.	Not more than 15% of the outer diameter	Flattening
More than 15% of the outer diameter	Bend
St. 273	Any	Bend

6.5.2 On request of the customer, pipes with an outside diameter of up to 60 mm inclusive, with a wall thickness of not more than 15% of the outer diameter, shall withstand a flattening test.

6.6 Limit deviations of diameter, wall thickness, length and shape deflection

6.6.1. The limiting deviations of the outer diameter and wall thickness shall not exceed the limit deviations specified in Tables 7 and 8.


Table 7 — Limit deviations of the dimensions of hot-deformed pipes

Pipe size, mm	Limit deviations at accuracy of manufacturing
ordinary	increased
Outer diameter
Up to 50 inclusive.	± 0.5 mm	-
Holy 50 to 95 inclusive	± 1.00%	± 0.75% (but not less than ± 0,5 mm)
95 to 140 inclusive.	± 1.00%	± 0.80%
140 to 245 inclusive.	± 1.00%	± 0.90%
Holy 245 to 299 inclusive	± 1.25%	± 0.90%
St. 299	± 1.25%	± 1.00%
Wall thicknesses
— outer diameter up to 108 inclusive, with wall thickness:
Up to 7.0 inclusive.	+ 12.5% -15.0%	± 12.5%
Holy 7.0 to 15.0 inclusive	+ 12.5% -15.0%	+ 10.0% -12.5%
St. 15.0	± 12.5%	± 10.0%
— Outer diameter exceeding 108 to 299 inclusive, with wall thickness:
All	+ 12.5% -15.0%	± 12.5%
— outer diameter over 299, with wall thickness:
Up to 15.0 inclusive.	+ 12.5% -15.0%	-
St. 15.0	± 12.5%	-

Table 8 — Limit deviations in the dimensions of cold-deformed pipes

Pipe size, mm	Limit deviations at accuracy of manufacturing
ordinary	increased
Outer diameter
Up to 10 inclusive.	± 0.15 mm	-
Holy 10 to 30 inclusive	± 0.30 mm	-
30 to 50 inclusive	± 0.40 mm	± 0.60% (but not less than ± 0.25 mm)
Holy 50 to 12 * inclusive.	± 0.80%
St. 120	± 0.80%	± 0.75%
Wall thicknesses
Up to 1.0 inclusive	± 0.12 mm	-
St 1.0 to 5.0 inclusive	± 10.00%	-
St. 5.0	± 8.00%	-

________________
* The text of the document corresponds to the original. — Note of the database manufacturer.

The maximum deviation of the internal diameter of the pipes shall not exceed the limit deviations established for an equal external diameter in Tables 7 and 8.

Upon agreement between the manufacturer and the customer, other limit deviations in the outer and inner diameters and the wall thickness of the pipes may be established.

6.6.2 Limit deviations of the length of pipes of a dimensional length and length, multiple of a dimensional, shall not exceed the values indicated in Table 9.


Table 9 — Limit deviations of pipe length

In millimeters

Pipe length	Limit deviations with outer diameter
up to 168 inclusive.	St. 168
Up to 6.0 inclusive	10	+15
Holy 6.0 to 12.0 inclusive	+15	+15
St. 12.0	+25	+25

As agreed between the manufacturer and the customer, the pipes of a measured length and length, a multiple of the dimensional, are manufactured with reduced or increased length deviations.

6.6.3 Ovality and variability should not lead to the diameter and thickness of the pipe wall beyond the allowed values for a given manufacturing accuracy.

6.6.4 The deviation of pipes from straightness in any section of 1 m length shall not exceed:

— for pipes with an outer diameter of up to and including 10 mm — 2.0 mm;

— for pipes with an outer diameter exceeding 10 mm — 1.5 mm.

If the manufacturer and the customer agree on the manufacture of pipes with the dimensions of POGOST P 53383, more than those specified in this standard, the deviation of the pipes from straightness in any section of 1 m length shall be as specified in GOST R 53383.

The requirements for the overall straightness of the pipes can be agreed between the manufacturer and the customer.

6.7 Surface quality

6.7.1. On the outer and inner surfaces of pipes, imperfections are not permissible that lead to a diameter or wall thickness beyond the permissible values, as well as the following defects: cracks, foils, flaws, sunsets.

6.7.2 It is allowed to remove imperfections and defects by continuous abrasive grinding, grinding, polishing, boring or turning, provided that they do not lead to a diameter and wall thickness beyond the permissible values.

It is allowed to remove imperfections and defects by local abrasive stripping, provided that it does not display the wall thickness beyond the permissible values. Plots of local mopping should smoothly pass into the adjacent surface of the pipe.

Repair of the surface of pipes by welding is not allowed.

6.7.3 On the surface of the pipes, certain imperfections are allowed: dents, risks, ruffles, other imperfections due to the production method, and traces of stripping, if they do not lead to a wall thickness beyond the permissible values.

On the surface of the pipes, traces of exfoliated scale and process grease are allowed, not interfering with surface quality control.

6.8. The solidity of the metal

6.8.1. The pipes shall withstand the hydrostatic test pressure, calculated according to the formula given in GOST 3845, with an allowable voltage in the pipe wall equal to 40% of the minimum value of the temporary resistance for the specified steel grade, but not exceeding 20 MPa.

The manufacturer can guarantee the ability of the pipes to withstand the test hydrostatic pressure without testing. The ability of pipes to withstand the test hydrostatic pressure is provided by the technology of pipe production.

6.8.2 Pipes shall undergo nondestructive testing by one of the following methods: ultrasonic, magnetic or eddy current — specified in the order.

6.9 Finishing of pipe ends

6.9.1 The ends of the pipes shall be cut at a right angle and stripped of burrs. When removing burrs, chamfers are allowed.

6.9.2 At the request of the customer at the ends of pipes with a wall thickness of 5.0 mm or more, an external chamfer at an angle of (35 + 5) ° to the end of the pipe with an end ring of a width of 1 to 3 mm should be made. To ensure the width of the end ring, it is possible to form an internal chamfer.

6.10 Marking and packaging

6.10.1 General requirements for marking and packing of pipes shall comply with GOST 10692 with the additions given in 6.10.2−6.10.5.

6.10.2 Marking of pipes with a diameter of 273 mm or more in addition to the main marking shall contain:

— melting number;

— batch number;

— pipe number;

— designation of this standard;

— quality service mark.

6.10.3 At the request of the customer, the ends of each pipe with a diameter of 108 mm or less must be tightly closed with special safety parts (plugs, plugs, caps).

6.10.4. As agreed between the manufacturer and the customer, temporary protective coating should be applied to the pipes ensuring protection of the pipe surface against corrosion during transportation by covered transport and storage in dry rooms (allowed in unheated) for up to 6 months.

6.10.5 Upon agreement between the manufacturer and the customer, the pipes must be packed in materials with volatile corrosion inhibitors that protect the surface of the pipes from corrosion during the transport and storage of pipes, provided that they are transported by covered vehicles and stored in dry rooms (allowed in unheated) 6 months

6.10.6 Upon agreement between the manufacturer and the customer, additional pipe marking may be performed.

6.10.7 Upon agreement between the manufacturer and the customer, a special package of pipes may be made.

7 Safety and environmental requirements

Steel pipes are fireproof, explosion-proof, electrically safe, non-toxic, do not present a radiation hazard and do not harm the environment and human health during testing, storage, transportation, operation and disposal.

8 Acceptance rules

8.1 Pipes are accepted in batches.

The batch should consist of pipes of the same diameter, with one wall thickness, there should be one melting, one grade of steel, one type of heat treatment.

8.2 The number of pipes in the batch should be, pcs., Not more than:

— 400 — for pipes with an outer diameter up to and including 76 mm;

— 200 — for pipes with an outer diameter of more than 76 mm.

8.3. To verify the compliance of the pipes with the requirements of this standard, the manufacturer carries out acceptance tests.

The types of control and testing, the rates of selection of pipes, samples and samples from batch or smelting shall be as specified in Table 10.


Table 10 — Types of control and testing, selection standards

Test Status	Type of testing or control	Scope of control or testing
The rate of pipe selection from the batch	The sampling rate from each selected pipe
Required	Control of chemical composition and carbon equivalent (by ladle test)	1 sample	-
Tensile test at room temperature	2	1
Impact bending test at room temperature	2	3
Control of macrostructure	2	1
Technological test (for distribution, flattening, bending)	2	1
Control of diameter, wall thickness, length	100%	-
Ovality and thickness control		-
Straightness control	100%	-
Visual surface quality control	100%	-
Hydrostatic testing	100%
Non-destructive testing	100%	-
Finishing of ends		-
Additional	Control of the chemical composition of metal pipes	3	1
Impact bending test at minus 20 ° C, minus 40 ° C or minus 60 ° C	2	3 for each test temperature
The tensile test at 350 ° C and 400 ° C	2	1 for each test temperature
Hardness testing	2	1
Test for flattening pipes up to 60 mm in diameter.	2	1
Checking the geometric parameters of the chamfer		-
Control of wall thickness by ultrasonic method	100%	-
Acceptance is allowed according to the steel manufacturer’s data. According to the technological documentation of the manufacturer. It is ensured that the diameter and wall thickness meet the requirements.

8.4 If unsatisfactory results are obtained, at least for one of the sample tests, a second test is carried out on a doubled number of pipes selected from the same lot, excluding pipes that have not passed the tests. Satisfactory results of repeated tests are extended to the whole lot.

If unsatisfactory results are obtained for the retesting of at least one of the samples, all the batch tubes are subjected to this test, excluding pipes that have not passed the tests, or are subjected to processing.

Recycled pipes are presented for acceptance as a new batch.

Repeated heat treatments (no more than three) of a rejected batch of pipes are allowed with their presentation to acceptance as a new batch. Leave is not considered a re-heat treatment.

8.5 On the accepted batch of pipes the document on acceptance control is issued: the certificate on passing of the technical control «3.1 V» in accordance with GOST 31458.

At the request of the customer, other documents on acceptance control are issued in accordance with GOST 31458.

The document on acceptance inspection should contain the following data:

— designation of this standard;

— type of pipes: hot-deformed or cold-deformed;

— pipe dimensions, manufacturing accuracy;

— type of length and length in mm;

— steel grade;

— chemical composition of steel;

— carbon equivalent (for steels of grades 10Г2 and 09Г2С);

— designation of the document for the pipe billet and the name of the manufacturer;

— batch number;

— melting number;

— information on the thermal treatment carried out, including from rolling heating, indicating the temperature range of normalization in accordance with Table 3;

— the results of all tests and controls, including additional tests;

— information on conducting non-destructive flaw detection, indicating the method of control;

— information on conducting hydrostatic tests or guaranteeing the ability of the pipes to withstand the test hydrostatic pressure;

— guarantee of conformity of macrostructure.

9 Methods of testing and testing

9.1 The chemical composition of steel is determined by the methods of chemical analysis in accordance with GOST 12359, GOST 22536.0 — GOST 22536.11, GOST 27809. Samples are selected in accordance with GOST 7565.

It is allowed to use other methods of analysis, which ensure the necessary accuracy of the determination, corresponding to the specified standards.

When disagreements in the evaluation of the chemical composition, chemical analysis methods are used.

9.2. The tensile test shall be carried out at room temperature in accordance with GOST 10006, at a temperature of 350 ° C and 400 ° C in accordance with GOST 19040 on longitudinal proportional samples.

9.3. The impact test is carried out according to GOST 9454 on longitudinal specimens of type 11.


Table 11 — The size of the distribution

steel grade	Increase in the outer diameter of the pipe,%, at wall thickness, mm
up to 4,0 inclusive.	St. 4.0
10	10	6th
20	8	5
10G2	8	5
09G2S	8	5

The impact strength values are determined as the arithmetic mean from the test results of the three samples. On one sample, the impact strength can be reduced by no more than 10 J / cm from the established norm.

9.4 Hardness control is carried out in accordance with GOST 9012. Hardness testing on specimens intended for tensile testing or impact bending is allowed.

9.5 It is allowed to control mechanical properties by non-destructive methods according to the relevant documentation. In case of disagreement in the evaluation of the results, the tests shall be carried out by the methods specified in 9.2−9.4.

9.6. Control of the macrostructure of the metal is carried out according to GOST 10243 on a pickled transverse circular sample.

9.7 Bend tests shall be carried out in accordance with GOST 3728.

9.8. The distribution tests are carried out according to GOST 8694 on a mandrel with a taper angle of 12 ° to increase the outer diameter of the pipes by the amount indicated for each steel grade in Table 11.

A mandrel test with a taper angle of 30 ° is allowed.

9.9. The flattening test shall be carried out in accordance with GOST 8695 until the distance between the flattening surfaces , mm, calculated by the following formula:

, (3)

Where  — strain coefficient equal to 0.09 for steel grade 10 and 0.08 for the remaining steel grades.

9.10 The diameter of the pipes is controlled by a caliper in accordance with GOST 166, a micrometer according to GOST 6507 or a caliper-gauge according to GOST 2216, GOST 18360 and GOST 18365.

Measurement of the outer diameter in places of local cleaning of defects and imperfections is not carried out.

The inner diameter is controlled by the gauge in accordance with GOST 2015 or the plug gauge of POST 140110.

The wall thickness is controlled by a pipe micrometer in accordance with GOST 6507, an indicator wall mount or a thickness gauge according to GOST 11358 from both ends of the pipe.

As agreed between the manufacturer and the customer, the wall thickness control is carried out by ultrasonic method along the entire length of the pipe according to the manufacturer’s documentation.

Deviation from straightness of pipes in a length of 1 m is measured by a calibration ruler in accordance with GOST 8026 and a set of probes according to the normative document.

Deviation from straightness along the entire length of the pipe is determined in accordance with GOST 26877.

The control of the length of the pipes is carried out by measuring tape according to GOST 7502.

Checking the geometrical parameters of the chamfer is carried out according to the manufacturer’s documentation.

It is allowed to carry out control by other means of measurement, the metrological characteristics of which provide the necessary accuracy of measurements.

If there is any disagreement in the evaluation of the results, the measurements are carried out according to the specified standards.

9.11 The quality of the surface of the pipes is controlled visually without the use of magnifying devices and devices.

The depth of imperfections and cleansing areas is determined according to the manufacturer’s documentation.

9.12. Hydrostatic tests are carried out in accordance with GOST 3845 with the holding of pipes under pressure of not less than 10 s.

9.13 Non-destructive flaw detection is carried out:

— by ultrasonic method according to the manufacturer’s documentation, developed in accordance with the requirements of GOST 17410;

— eddy current method according to the manufacturer’s documentation;

— magnetic method according to the manufacturer’s documentation.

The sensitivity adjustment of the equipment corresponding to the rejection level is carried out according to a standard sample with artificial defects, the location, orientation, type and dimensions of which are indicated in Table 12.


Table 12 — Location, orientation, type and size of artificial defects

Method of control	Type and size of pipes	Location, orientation, type and size of the artificial defect
Longitudinal rectangular risk				Radial Drilled Hole
Surface	Depth	Length, mm (± 10%)	Width, mm	Diameter, mm
The ultrasonic method	Hot-deform- with 5	External and internal	(12.50 ± 1.25)% , but not less than 0.5 mm and not more than 2.0 mm	25	Not more than 1,5	-
Hot-deform- with 5	(20.0 ± 2.0)% , but not less than 1.0 mm and not more than 3.0 mm	25	Not more than 1,5	-
Cold formed c 5	(10.0 ± 1.0)% , but not less than 0.3 mm and not more than 2.0 mm	25	Not more than 1,5	-
Cold formed c 5	(15.0 ± 1.5)% , but not less than 0.5 mm and not more than 2.5 mm	25	Not more than 1,5	-
Eddy current method:
— equipment with pass-through transformers the	Any	-	-	-	-	2.0 ± 0.2 for 20 3.0 ± 0.2 at 20 60 4.0 ± 0.2 at 60 127 5.0 ± 0.2 for 127
— equipment with overhead converters the	Any	Outdoor	(12.50 ± 1.25)% , but not less than 0.3 mm and not more than 2.0 mm	25	Not more than depth	-
Magnetic method	Any	Outdoor	(12.50 ± 1.25)% , but not less than 0.3 mm and not more than 2.0 mm	25	Not more than twice the depth, but not more than 1.0 mm	2.0 ± 0.2 for 20 3.0 ± 0.2 at 20 60 4.0 ± 0.2 at 60 127 5.0 ± 0.2 for 127
For pipes with a wall thickness of less than 2.0 mm or an internal diameter of 10 mm or less, the dimensions of the longitudinal rectangular risks shall be established by agreement between the manufacturer and the customer. On a standard specimen, three holes should be made, offset 120 ° from each other along the circumference of the specimen. The distance between the holes in the longitudinal direction should be sufficient to obtain independent and clearly distinguishable indications from them. A standard sample with one hole is allowed. At the same time, the equipment is tuned dynamically, passing the standard sample through the equipment at the position of the hole 0 °, 90 °, 180 ° and 270 °. The control is carried out when adjusting the sensitivity of the apparatus by one of the types of artificial defect: longitudinal rectangular risk or a radial drilled hole.

10 Transportation and storage

Transportation and storage of pipes are carried out in accordance with GOST 10692.

11 Manufacturer’s warranties

The manufacturer guarantees the compliance of the pipes with the requirements of this standard, provided that the norms and rules of transportation, storage of pipes and the correspondence of operating conditions to the purpose of the pipes are observed.