• 26.10.2019 at 12:15 Enterprise LLC "Micron-Marine" wants to purchase:
  Seamless stainless steel pipes Ø345x30 (32); Ø351x30 (32); Ø377x40 (45), (48)
  Stainless steel pipes, electric-welded Ø345x30 (32); Ø351x30 (32); Ø377x40 (45), (48) length: 1110 steel: St.20X13.30X13, (analogs) in accordance with GOST, TU, in the following volume: 1 piece
  

  Add-ons from the customer: You can help with the supply of stainless steel. pipes St.20X13.30X13, (analogs) in accordance with GOST, TU…. standard sizes: Ø345x30 (32); Ø351x30 (32); Ø377x40 (45), (48) .... Clean. size Ø340хØ300х1110 details. -1 PC. Thanks in advance for your prompt reply. reply to the application

• 23.10.2019 at 13:30 Enterprise OOO Spetsstal wants to purchase:
  Stainless steel pipes, electric-welded 273х5-8
  Seamless stainless steel pipes 273х5-8 length: 1.7 steel: AISI310S, in the following volume: 1 piece
  reply to the application
• 10/22/2019 at 12:20 Organization (contact person: Alexander) will acquire:
  Stainless steel pipes, electric-welded 19.05х1.65 steel: EN 1.4404, in the following scope: 30 m3 / n
  

  Customer wishes: We need pipes ss 19.05x1.65 EN 1.4404 (AISI 316L) mp 30 reply to the application

• 22.10.2019 at 10:51 Enterprise LLC "REGINZHSTROY" will acquire:
  Stainless steel pipes, electric-welded D = 160x2.0 mm in the following volume: 15 m / n
  

  Customer wishes: You need a ventilation pipe D = 160x2.0 mm length L = 15.0 m.p from stainless steel pcs 1 reply to the application

• 21.10.2019 at 14:34 Organization (contact person: Evgeniya) will acquire:
  length: L = 300mm steel: V-20 GOST 8733-74 GOST 8734-75, in the following volume: 3 pcs Steel sheet, cold rolled 32x4 length: L = 100mm steel: V-20 GOST 8733-74 GOST 8734-75, in the following volume: 8 m2 Steel sheet, cold rolled 32x3.5 length: L = 100mm steel: V-20 GOST 8733-74 GOST 8734-75, in the following volume: 1 piece Steel sheet, cold rolled 25x3.5 length: L = 80mm steel: V-20 GOST 8733-74 GOST 8734-75, in the following volume: 4 pcs Steel sheet, cold rolled 14x3 length: L = 50mm steel: V-20 GOST 8733-74 GOST 8734-75, in the following volume: 3 pieces length: L = 100mm steel: AISI316L, in the following volume: 3 pieces Stainless steel pipes, electrowelded 33.7x2 length: L = 100mm steel: AISI 304L, in the following volume: 2 pieces

  Customer wishes: Seamless cold-deformed steel pipes with external cylindrical pipe threads, 32x4 L = 300mm В-20 GOST 8733-74 pcs 3 Seamless cold-deformed steel pipes with external cylindrical pipe threads, 32x4 L = 100mm В-20 GOST 8733-74 pcs 8 Seamless cold-deformed steel pipes with external cylindrical pipe thread, 32x3.5 L = 100mm В-20 GOST 8733-74 pcs 1 Seamless cold-worked steel pipes with external cylindrical pipe threads, 25x3.5 L = 80mm В-20 GOST 8733-74 pcs 4 Seamless cold-deformed steel pipes with external cylindrical pipe thread, 14x3 L = 50mm V-20 GOST 8733-74 pcs 3 Pipes es nzh 33.7x2 L = 100mm AISI316L pcs 3 Pipes es nzh 33.7x2 L = 100mm AISI 304L pcs 2 reply to the application

Announcements to sell buy Stainless steel pipes, electric-welded GOST 11068-81 in the region "Moscow"

Stainless pipes 219x6 10tn 330tr / tn. 12X18H10T.
Stainless pipes 76х3 12Х18Н10Т 220tr / tn. Stainless pipes 219x6 12X18H10T 10tn 330tr / tn. Seamless pipes 168х4, 5 12Х18Н10Т. Seamless pipes 100х3 12Х18Н10Т at 390r / kg. Pipes 273-550mm 15X5M and 15XM. From 98r / kg with VAT. Seamless pipes 25x2x4100mm 12X18H10T. Seamless pipes 2х0, 2 ...

220r !!! Stainless pipes 76х3 12Х18Н10Т 220tr / tn.
Stainless pipes 219x6 12X18H10T 10tn 330tr / tn. Seamless pipes 168х4.5 12Х18Н10Т Seamless pipes 100х3 12Х18Н10Т at 390r / kg. Pipes 273-550mm 15X5M and 15XM. From 98r / kg with VAT. Seamless pipes 25х2х4000mm 12Х18Н10Т. Seamless pipes 2x0.2, 3x0.3, 4x0.8, 5x0.5, 6x0.5, 6x1, 6x1.5 -08X18H10T. ...

Sell ​​Pipes Stainless Suture Soviet production.
Sell ​​Pipes Stainless Suture Soviet production. Price for the entire volume: cash settlement RUB 150 / kg, bank transfer RUB 180 / kg tel. cell: + 7-910-136-91-20, + 7-996-003-75-63, +79159324523 08 (12) Х18Н10Т Diameter / wall thickness / length 63х1.5mm - 5.4m weight 1890kg ~ 20% wrinkled ... 76 ...

I sell Pipes 12 (08) X18H10T, Aisi 304, 1.4466, X17H13M2T, 20H23H18, 10H17H13M2T, price from 150 rubles / kg.
I sell Pipes 12 (08) X18H10T, Aisi 304, 1.4466, X17H13M2T, 20H23H18, 10H17H13M2T, price from 150 rubles / kg. Price on request. Tel. + 7-910-136-91-20, + 7-996-003-75-63, +79159324523 email mail: [email protected] Pipe Brand diameter / thickness length, mm 08 (12) Х18Н10Т 9.5х1.1 ...

Product inquiry AISI 304
I propose to consider the possibility and inform the terms of delivery of stainless steel products: No. Name Quantity Unit. rev. 1.1. Pipe 273.0х2.0-AISI 304 (L) DIN 17457 200 m 1.2. Pipe 273.0х3.0-AISI 304 (L) DIN 17457 200 m 2.1. Pipe 159.0х2.0-AISI 304 (L) DIN 17457 200 m 2.2. Pipe 168,3х2,0-A ...

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Buy longitudinal electric-welded pipes
I will buy pipes (new, old, from the state reserve) longitudinal stainless electric-welded on steel 08X18H10T; 12X18H10T; 03X17H14M3; 08X18H10; 03X18H10;

We will buy pipes 720x16 12X18H10T.
We will buy pipes 720x16 12X18H10T. We will buy seamless pipes 32х3 12Х18Н10Т. We will buy seamless pipes 76x4 12X18H10T. We will buy seamless pipes 32x6 12X18H10T. 8-900-02-72-888. We will buy stainless steel sheets 8mm 1.5x6m 10X17H13M2T (aisi 316Ti). Stock balance. Illiquid assets. 8-900-088-88-86. Yuri Nikolaevich. Let's buy seamless ...

Stainless steel pipe - = - = st..08x13, f25x2x6000mm --- gost 9941-81 - 1962 meters
Buy Stainless pipe - = - = st..08x13, f25x2x6000mm --- gost 9941-81 - 1962 meters

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INTERSTATE STANDARD

ELECTRIC WELDED PIPES FROM
CORROSION RESISTANT STEEL

Technical conditions

IPK PUBLISHING STANDARDS

Moscow

INTERSTATE STANDARD

By the decree of the USSR State Committee for Standards dated October 20, 1981 No. 4629, the date of introduction was established 01.01.83

The limitation of the validity period was lifted according to the protocol of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)

This standard applies to electrically welded pipes made of corrosion-resistant (stainless) steels intended for the manufacture of pipelines and various structures.

(Modified edition, Amendment No. 2).

1. VARIETY

1.1. The dimensions of the pipes must correspond to those indicated in table. one.

Table 1

Outside diameter, mm

Wall thickness

Notes:

1. Pipe sizes in parentheses are not recommended when designing new facilities.

2. The theoretical mass of 1 m of pipes ( T), kg, is calculated by the formula

where D n is the nominal outer diameter of the pipe, mm;

s n - nominal pipe wall thickness, mm;

γ is the density of the metal, g / cm 3, depending on the steel grade:

08X18H10T, 10X18H10T, 12X18H10T, 03X18H10T, 08X18H10 - 7.9;

08X21H6M2T - 7.85;

10Х17Н13М2Т, 10Х17Н13М3Т, 03Х17Н13М2Т, 03Х17Н14М3 - 8.0;

06XN28MDT - 7.95;

04X17T, 08X18T1 - 7.72.

3. Pipes made of steels of grades 08X18T1 and 04X17T are manufactured with a wall thickness of up to 2.0 mm.

4. By agreement between the manufacturer and the consumer, pipes can be produced: of intermediate dimensions with tolerances in diameter and wall thickness of nearby large dimensions; from corrosion-resistant steels of the best grades; with mixed or one-sided outer diameter tolerances. The value of the field of an offset or one-sided tolerance should not exceed the sum of two-sided deviations.

(Modified edition, Amendment No. 2).

1.2. Along the length of the pipe should be made:

measured length - from 5 to 9 m;

measured length with the remainder - no more than 10% (by mass) of pipes of unmeasured length;

multiple gauge length - up to 9 mm with an allowance for each cut of 5 mm (if another allowance is not specified in the order), which is included in each multiple length;

multiple length with the remainder - no more than 10% (by weight) of pipes of unmeasured length;

off-gauge length - from 1.5 to 9 m.

1.3. Limit deviations along the length of pipes of measured and multiple length should not exceed +15 mm.

1.2, 1.3 (Modified edition, Amendment No. 1).

1.4. Limit deviations for the outer diameter and wall thickness are shown in table. 2.

table 2

Pipe dimensions, mm	Limit deviation		Pipe dimensions, mm	Limit deviation
	Normal Accuracy	Increased accuracy		Normal Accuracy	Increased accuracy
Outside diameter:			Wall thickness:
			from 0.8 to 2
St. 20 to 35

At the request of the consumer, pipes with dimensions of 38´1.5 and 43´1.5 mm are made with maximum deviations in the outer diameter of mm.

1.4(Modified edition, Amendments No. 1, 2).

1.5. The ovality and wall thickness of the pipes should not take the dimensions of the pipes beyond the maximum deviations, respectively, in terms of diameter and wall thickness.

1.6. The straightness tolerance of pipes should not exceed 1.5 mm per 1 m of length.

Legend examples

Pipe, with an outer diameter of 25 mm and a wall thickness of 2 mm, of unmeasured length, made of steel grade 08X18H10T:

Pipe 25 ´2 - 08X18H10T GOST 11068-81

The same, with a length multiple of 2000 mm:

Pipe 25 ´2´2000 cr - 08X18H10T GOST 11068-81

The same, measured length 6000 mm:

Pipe 25 ´2´6000 - 08X18H10T GOST 11068-81

The same, with increased manufacturing accuracy:

Pipe 25P´2П´6000 - 08X18H10T GOST 11068-81

For heat-treated pipes, the letter T is placed after the word pipe.

2. TECHNICAL REQUIREMENTS

2.1. Pipes are manufactured in accordance with the requirements of this standard according to technological regulations, approved in the prescribed manner, from steel grades 10X18H10T and 04X17T with the chemical composition indicated in table. 3, and steel grades 08X18H10T, 08X18T1, 08X18H10, 12X18H10T, 10X17H13M2T, 10X17N13M3T, 08X22H6T, 08X21H6M2T, 06XH28MDT, 08X17H13M2T, 03X17H14M3, 03X17H14M3, 03X18-72N10T with chemical composition GOST.

Table 3

Steel grade	Mass fraction of elements,%
			Manganese
						From 5 (C * -0.02) to 0.6
			No more than 0.8			From 5 C * to 0.60
* Concentration of carbon in steel,%. Notes: 1. Allowed deviation in the mass fraction of nickel up to minus 0.5%. 2. By agreement of the parties, it is allowed to clarify the chemical composition of the steels.

2.2 Pipes made of steels of grades 08X18H10T, 08X18T1, 10X18H10T, 12X18H10T, 04X17T are manufactured thermally treated with the mechanical properties indicated in table. 4. Mechanical properties of pipes made of steel 08X18T1 and 04X17T for wall thicknesses exceeding 1.5 mm are established by agreement of the parties.

Table 4

Steel grade	Ultimate strength σ in, N / mm 2 (kgf / mm 2)	Yield strength σ t, N / mm 2 (kgf / mm 2)	Elongation δ 5,%
10X18H10T, 12X18H10T

2.1, 2.2 (Modified edition, Amendment No. 2).

2.2.1. Pipes from other grades of steel specified in clause 2.1 are manufactured thermally treated, and at the request of the consumer without heat treatment; in this case, the mechanical properties are established by agreement between the manufacturer and the consumer.

The number of pipes in a batch should be no more than:

500 pcs. - with a diameter of up to 30 mm;

300 pcs. - with a diameter over 30 mm.

3.2. The chemical composition of the steel is taken according to the document on the quality of the original coil steel. In case of disagreement in the assessment of the chemical composition, one pipe from the batch is selected for verification.

3.3. Each pipe in a batch is subject to surface quality and dimensional checks, as well as hydraulic pressure or non-destructive testing of pipes.

At the request of the consumer, when testing the welded seam of pipes by non-destructive methods, an additional hydraulic pressure test is carried out from 10 to 100% of the pipes of the batch.

3.4. To check the height of the internal burr, 2% of the pipes from the batch are taken.

3.5. For tensile testing, intergranular corrosion, expansion, beading, bending, flattening, two pipes are taken from the batch. To determine the grain size, one pipe is taken from the batch.

Determination of the yield point of the metal is carried out at the request of the consumer.

3.6. Upon receipt of unsatisfactory test results for at least one of the indicators for it, repeated tests are carried out on a double number of pipes selected from the same batch.

Retest results apply to the entire batch.

4. TEST METHODS

4.1. One sample is cut from each selected pipe for each type of test.

4.2. Chemical analysis is carried out in accordance with GOST 12344-88, GOST 12346-78, GOST 12347-77, GOST 12348-78, or, or a micrometer in accordance with GOST 6507-90;

deviation from straightness - with a straight edge in accordance with GOST 8026-92 and a probe in accordance with a regulatory document;

wall thickness, wall thickness and height of the internal burr - with a micrometer in accordance with GOST 6507-90 or a wall gauge in accordance with GOST 11358-89. The measurement of the height of the inner burr is carried out at a distance of up to 25 mm from the ends of the pipes, and the outer diameter is at least 15 mm from the ends of the pipes.

It is allowed to control the length, outer diameter and wall thickness of pipes by automatic means according to regulatory documents. In case of disagreement in the assessment of the measurement results, control is carried out using the measuring instruments listed above.

On a longitudinal short specimen (in the form of a strip with a seam or a pipe segment). The test speed up to the yield point should be no more than 10 mm / min, beyond the yield point - no more than 40 mm / min.

4.13. Non-destructive quality control of the weld is carried out in accordance with the regulatory documentation.

4.14. The right angle for cutting pipe ends is not controlled and is determined by the design of the pipe cutting equipment.

(Introduced additionally, Amendment No. 1).

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Marking, packaging, transportation and storage - in accordance with GOST 10692-80.

(Modified edition, Amendment No. 1).

5.2 (Deleted, Amendment No. 2).

Amendment No. 2 was adopted by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 10 of 03.10.96)

State name	The name of the construction management body
The Republic of Azerbaijan	Azgosstandart
Republic of Armenia	Armgosstandart
Republic of Belarus	State Standard of the Republic of Belarus
The Republic of Kazakhstan	Gosstandart of the Republic of Kazakhstan
Republic of Kyrgyzstan	Kyrgyzstandard
The Republic of Moldova	Moldovastandart
the Russian Federation	Gosstandart of Russia
The Republic of Tajikistan	Tajikgosstandart
Turkmenistan	Glavgosinspektsiya "Turkmenstandartlary"
The Republic of Uzbekistan	Uzgosstandart
	State Standard of Ukraine

STATE STANDARD OF THE UNION OF SSR

By the decree of the USSR State Committee for Standards dated October 20, 1981 No. 4629, the date of introduction was established

01.01.83

The limitation of the validity period was lifted according to the protocol of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)

State name	The name of the construction management body
The Republic of Azerbaijan	Azgosstandart
Republic of Armenia	Armgosstandart
Republic of Belarus	State Standard of Belarus
The Republic of Kazakhstan	Gosstandart of the Republic of Kazakhstan
Republic of Kyrgyzstan	Kyrgyzstandard
The Republic of Moldova	Moldovastandart
The Russian Federation	Gosstandart of Russia
The Republic of Tajikistan	Tajikgosstandart
Turkmenistan	Main State Inspectorate of Turkmenistan
The Republic of Uzbekistan	Uzgosstandart
	State Standard of Ukraine

This standard applies to electrically welded pipes made of corrosion-resistant (stainless) steels intended for the manufacture of pipelines and various structures.

1. VARIETY

1.1. The dimensions of the pipes must correspond to those indicated in table. ...

Table 1

	Limit deviation		Pipe dimensions, mm	Limit deviation
	Normal Accuracy	Increased accuracy		Normal Accuracy	Increased accuracy
Outside diameter:			Wall thickness:
	± 0.30 mm	± 0.20 mm	from 0 , 8 to 2	± 0.20 mm	± 0.15 mm
St. 20 to 35	± 0.35 mm	± 0.25 mm		± 0.25 mm	± 0.20 mm
	± 1,0 %	± 0,75 %		± 10 %	± 10 %

(Modified edition, Amendment No. 2).

At the request of the consumer, pipes with dimensions 38´ 1.5 and 43 ´ 1.5 mm are made with maximum deviations in the outer diameter of mm.

1.1 - 1.4.

1.5. The ovality and wall thickness of the pipes should not take the dimensions of the pipes beyond the maximum deviations, respectively, in terms of diameter and wall thickness.

1.6. The straightness tolerance of pipes should not exceed 1.5 mm per 1 m of length.

Legend examples

Pipe, with an outer diameter of 25 mm and a wall thickness of 2 mm, of unmeasured length, made of steel grade 08X18H10T:

Pipe 25 ´ 2 - 08X18H10T GOST 11068-81

The same, with a length multiple of 2000 mm:

Pipe 25 ´ 2 ´ 2000 cr - 08X18H10T GOST 11068-81

The same, measured length 6000 mm:

Pipe 25 ´ 2 ´ 6000 - 08X18H10T GOST 11068-81

The same, with increased manufacturing accuracy:

Pipe 25P ´ 2P´ 6000 - 08X18H10T GOST 11068-81

For heat-treated pipes, the letter T is placed after the word pipe.

2. TECHNICAL REQUIREMENTS

2.1. Pipes are manufactured in accordance with the requirements of this standard according to technological regulations, approved in the prescribed manner, from steel grades 10X18H10T and 04X17T with the chemical composition indicated in table. , and steel grades 08Х18Н10Т, 08Х18Т1, 08 X 18 H 10, 12X18H10T, 10X17H13M2T, 10Х17Н13М3Т, 08Х22Н6Т, 08Х21Н6М2Т, 06ХН28МДТ, 08Х17Н13М2Т, 03Х17Н14М3, 03Х18Н10Т with a chemical composition according to GOST 5632-72.

Table 3

	Mass fraction of elements , %
			Manganese
				17, 0 - 19, 0	10, 0 - 11, 0	From 5 (C * -0 , 02) to 0 , 6	0, 020	0, 035
			No more than 0 , 8	16, 5 - 18, 5		From 5 C * to 0 , 60	0, 025	0, 035
* Concentration of carbon in steel,%. Notes: 1. Allowed deviation in the mass fraction of nickel up to minus 0.5%. 2. By agreement of the parties, it is allowed to clarify the chemical composition of the steels.

2.2 Pipes made of steels of grades 08X18H10T, 08X18T1, 10X18H10T, 12X18H10T, 04X17T are manufactured thermally treated with the mechanical properties indicated in table. 226 (23)

2.1, 2.2 (New edition, Amendment No. 2).

2.2.2. By agreement with the customer, pipes can be subjected to cold and warm deformation in the mill line.

(Introduced additionally, Amendment No. 2).

2.3. On the surface of the pipes, lack of penetration, pores, cracks, captivity, flaws, scale, traces of overgrazing are not allowed.

Scratches, traces of straightening, risks, traces of cleaning of defects are allowed if the pipe wall thickness does not exceed the maximum deviations, as well as discoloration resulting from heat treatment or welding.

By agreement with the consumer, it is allowed to supply pipes made of steels 08X18T1 and 04X17T with an oxide film on the surface formed as a result of heat treatment.

The pipes can be produced with a polished outer surface. The roughness is determined by agreement with the consumer.

On the outer surface of the pipes in the places of their contact with the gasket, areas of non-staining caused by the etching technology are allowed.

(New edition, Amendment No. 2).

2.4. The height of the inner bead must not exceed:

0.7 mm - for pipes of general purpose;

0.1 mm - for pipes used for the manufacture of tubular heating elements.

At the request of the consumer, general-purpose pipes with a nominal inner diameter of over 20 mm are made with a burr height of no more than 0.3 mm. The transition from the burr to the pipe walls should be smooth.

2.5. The ends of the pipes should be cut at right angles and deburred. Chamfering when deburring is allowed. At the request of the consumer, it is allowed to manufacture pipes with deburring and internal chamfering from one end, provided that the stripped ends are oriented in one direction.

At the request of the consumer, pipes are made cut in the mill line.

(New edition, Amendment No. 2).

2.6. For chemical engineering, chemical industry, and at the request of the consumer for other industries, heat-treated pipes of their steels of grades 08X18H10T, 10X18H10T, 10X17H13M2T, 10X17H13M3T, 08X22H6T, 08X21H6M2T, 06XH28MDT must withstand the intercrystalline corrosion test.

2.7. Pipes made of steels of grades 08X18H10T, 10X18H10T must withstand the flattening test to a distance ( N) between flattening planes in millimeters, calculated by the formula

where S n - nominal pipe wall thickness, mm;

D n - nominal outer diameter of the pipe, mm.

At the request of the consumer for pipes with a ratioS n / D n , equal to 0.04 or more, distance N should not be more than 1/3D n.

Heat-treated pipes of other steel grades must withstand the flattening test up to a distance N equal to 1/2 of the outer diameter.

Pipes without heat treatment shall withstand the flattening test up to a distance N equal to 2/3 of the outer diameter.

(New edition, Amendment No. 2).

2.8. At the request of the consumer, heat-treated pipes must withstand the following tests:

expansion tests before increasing the outer diameter:

by 12% - for pipes of steel grades 08X18H10T, 08X18T1, 08X18H10, 12X18H10T, 10X18H10T, 04X17T, 03X18H10T, 08X17H13M2T, 03X17H14M3;

by 6% - for pipes made of other steel grades.

By agreement of the parties, pipes made of steels of grades 08X18T1, 10X18H10T, 12X18H10T must withstand the expansion test by 15%;

bead test until the width of the bend is bent, measured from the inner surface of the pipe, equal to 1.5 wall thickness (bead test is carried out on pipes with a diameter of at least 25 mm; bead angle 90° );

bend test (the bend radius is set by agreement between the manufacturer and the consumer).

(New edition, Amendment No. 2).

2.9. At the request of the consumer, the grain size of the metal of finished pipes made of steel grade 10X18H10T and 12X18H10T should be 3 - 7 points.

2.10. Pipes must withstand a test hydraulic pressure of 6 MPa (60 kgf / cm 2) or non-destructive testing of the continuity of the welded seam.

At the request of the consumer, the pipes must withstand the hydraulic pressure ( R 1) in accordance with the requirements of GOST 3845-75, but not more than 20 MPa (200 kgf / cm 2). In this case, the permissible stress in the pipe wall is taken equal to 40% of the ultimate tensile strength.

3. RULES OF ACCEPTANCE

3.1. Pipes are accepted in batches. A batch should consist of pipes of the same size in diameter and wall thickness, one steel grade, one type of heat treatment and be accompanied by one quality document in accordance with GOST 10692-80.

The number of pipes in a batch should be no more than:

500 pcs. - with a diameter of up to 30 mm;

300 pcs. - with a diameter over 30 mm.

3.2. The chemical composition of the steel is taken according to the document on the quality of the original coil steel. In case of disagreement in the assessment of the chemical composition, one pipe from the batch is selected for verification.

3.3. Each pipe in a batch is subject to surface quality and dimensional checks, as well as hydraulic pressure or non-destructive testing of pipes.

At the request of the consumer, when testing the welded seam of pipes by non-destructive methods, an additional hydraulic pressure test is carried out from 10 to 100% of the pipes of the batch.

(Modified edition, Amendment No. 1).

3.4. To check the height of the internal burr, 2% of the pipes from the batch are taken.

3.5. For tensile testing, intergranular corrosion, expansion, beading, bending, flattening, two pipes are taken from the batch. To determine the grain size, one pipe is taken from the batch.

Determination of the yield point of the metal is carried out at the request of the consumer.

3.6. Upon receipt of unsatisfactory test results for at least one of the indicators for it, repeated tests are carried out on a double number of pipes selected from the same batch.

Retest results apply to the entire batch.

4. TEST METHODS

4.1. One sample is cut from each selected pipe for each type of test.

4.2. Chemical analysis is carried out in accordance with GOST 12344-88, GOST 12346-78, GOST 12347-77, GOST 12348-78, GOST 12349-83, GOST 12350-78, GOST 12351-81, GOST 12352-81, GOST 12353-78, GOST 12354-81, GOST 12355-78, GOST 12356-81, GOST 12365-84 or GOST 28473-90,

wall thickness, wall thickness and height of the internal burr - with a micrometer in accordance with GOST 6507-90 or a wall gauge in accordance with GOST 11358-89. The measurement of the height of the inner burr is carried out at a distance of up to 25 mm from the ends of the pipes, and the outer diameter is at least 15 mm from the ends of the pipes.

It is allowed to control the length, outer diameter and wall thickness of pipes by automatic means according to regulatory documents. In case of disagreement in the assessment of the measurement results, control is carried out using the measuring instruments listed above.

(Modified edition, Amendments No. 1, 2).

4.5. The grain size is determined by the base metal in accordance with GOST 5639-82. In this case, pipes are not tested for intergranular corrosion.

4.6. Sampling and intergranular corrosion testing are carried out in accordance with GOST 6032-89. In case of disagreement in the assessment of the results, the tests are carried out according to the method AM GOST 6032-89, except for pipes made of steel grade 06ХН28МДТ.

(Modified edition, Amendment No. 1).

4.7. The tensile test is carried out in accordance with GOST 10006-80 on a longitudinal short sample (in the form of a strip with a seam or a pipe segment). The test speed up to the yield point should be no more than 10 mm / min, beyond the yield point - no more than 40 mm / min.

4.8. The hydraulic test is carried out in accordance with GOST 3845-75 with holding under pressure for at least 5 s.

4.9. The extension test is carried out in accordance with GOST 8694-75 on a mandrel with a taper of 30 °.

4.10. The test for boarding is carried out in accordance with GOST 8693-80.

4.11. The flattening test is carried out in accordance with GOST 8695-75 with the horizontal position of the weld. At the request of the consumer, the test should be carried out at two positions of the weld: horizontally and vertically.

(Modified edition, Amendment No. 2).

4.12. The bend test is carried out in accordance with GOST 3728-78.

4.13. Non-destructive quality control of the weld is carried out in accordance with the regulatory documentation.

4.14. The right angle for cutting pipe ends is not controlled and is determined by the design of the pipe cutting equipment.

(Introduced additionally, Amendment No. 1).

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Marking, packaging, transportation and storage - in accordance with GOST 10692-80.

(Modified edition, Amendment No. 1).

5.2. (Deleted, Amendment No. 2).

CONNECTING PARTS TO THEM

STATE STANDARDS OF THE UNION OF SSR

METAL PIPES AND CONNECTING PARTS TO THEM

Official edition

PUBLISHING STANDARDS 1981

UDC S69.14.462.3.006.354

FROM THE PUBLISHER

The collection "Metal pipes and fittings to them" part 2 contains standards approved before October 1, 1980.

All changes adopted before the specified date have been made to the standards. There is a * mark next to the number of the standard to which the change was made.

Current information on the newly approved and revised standards, as well as on the changes adopted to them, is published in the monthly information index "State standards of the USSR".

© Standards Publishing House, 1981

Group B62

STATE STANDARD OF THE UNION OF SSR

ELECTRIC WELDED STAINLESS STEEL PIPES

Electrically welded stainless steel tubes

from 01/01/1966 to 01/01/1962

Approved by the State Committee of Standards, Measures and Measuring Instruments of the USSR on October 26, 1964.

Failure to comply with the standard is punishable by law

This standard applies to electrically welded stainless steel pipes used in various structures and pipelines.

I. VARIETY

1. The dimensions of the pipes must correspond to those indicated in table. one.

2. The length of the pipe must be supplied:

a) off-gauge length from 1.5 to 8 m; by agreement of the parties, it is allowed to supply pipes with a length of more than 8 m;

b) measured length from 5 to 8 m;

c) length, a multiple of the measured one within the unmeasured one, with an allowance for each cut of 5 mm (if another is not specified in the order) and permissible deviations along the entire length + 15 mm.

3. In each batch of pipes of unmeasured length, no more than 5% of pipes with a length of up to 1.5 m are allowed, but not less than 0.5 m.

4. Permissible deviations in the outer diameter and wall thickness of the pipes should not exceed those indicated in table. 2.

5. The curvature of the pipes should not exceed 1.5 mm per 1 m.

Official edition Reprinting prohibited

Table 1

Steak thickness, mm

Notes: I. Pipe sizes in parentheses are not recommended. When designing new machines and structures, it is necessary to provide the recommended dimensions. 2. The theoretical mass of 1 m of pipes "(/?), Kg, is calculated by the formula

where D, i is the nominal outer diameter of the pipe, mm; s - pipe wall thickness, mm; y is the relative mass of the metal depending on the grade of steel (see Table 4).

3. Pipe dimensions, limited by the contour, are supplied after the start-up of new equipment.

table 2

Pipe dimensions, mm

Outside diameter: ± 0.3mm ± 0.4mm ± 1.0%

Up to S From 10 to 30 Above. thirty

By wall thickness: ± 0.20 mm ± 0.25 mm ± 10%

Up to 2 From 2 to 3 Over 3

Permissible deviation

Note. For pipes with a wall thickness of 1.5 mm with the State Quality Mark, the maximum deviations in wall thickness should not exceed ± 0.15 mm.

6. Ovality and wall thickness of pipes should not bring its dimensions beyond the permissible deviations in the outer diameter and wall thickness.

Examples of symbols for pipes with an outer diameter of 25 mm and a wall thickness of 2 mm.

Unmeasured length from steel grade 12X18H10T:

Pp. 5, 6. (Modified edition - "Inform. Index of standards" No. 2 1978).

II. TECHNICAL REQUIREMENTS

7. Pipes must be made of steel grades indicated in table. 4, with a chemical composition in accordance with GOST 5632-72. The chemical composition of steel grades 00X18H10T and 0X23H28M2T must correspond to that indicated in table. 3.

Table 3

Mass fraction of elements,%

Notes: 1. Mass fraction of carbon in steel grades 12Х18Н10Т and 12Х18Н12Т should not exceed 0 ,! %. The mass fraction of sulfur in steel grades 08Х22Н6Т and 12Х21Н5Т should not exceed 0.02%. 2. By agreement of the manufacturer, the consumer can use steel grades 10X17H13M2T, 10X17H13M3T, 08X22H6T, 12X21H5T, 06XH28MDT and 0X23H28M2T.

(Modified edition - "Inform. Index of standards" No. 2 1978).

8. The surface of the pipes must be clean, smooth, free of scale, traces of overflow, lack of penetration, pores, cracks, captivity, flaws and deep scratches.

Small scratches, dents, risks, minor nicks and traces of cleaning defects are allowed provided that they do not bring the wall thickness and outer diameter outside the permissible deviations.

9. On the inner surface of the pipes (along the seam), the burr height should not exceed 0.7 mm with a smooth transition to the pipe walls.

At the customer's request, pipes with a nominal inner diameter of 20 mm and more are supplied without an internal burr. In this case, burr traces with a height of no more than 0.3 mm are allowed.

10. Pipe ends should be cut at right angles and deburred.

11. Pipes are delivered in heat treated condition. At the request of the consumer, specified in the order, pipes can be supplied without heat treatment. The mechanical properties of the pipes must correspond to those indicated in table. 4.

12. For chemical engineering, chemical industry at the request of consumers for other industries, all thermally treated pipes must withstand the intercrystalline corrosion test.

13. At the request of the consumer, pipes must be subjected to one or two types of tests:

a) flattening - for heat-treated pipes by a value of R equal to 7g of the outer diameter; for pipes without thermal

chemical processing - by the value of R, equal to 2/3 of the outer diameter;

for heat-treated pipes with the State Quality Mark, the value of R should be equal to 7z of the outer diameter;

Table 4

steel grade Mechanical properties of pipes after heat treatment without heat treatment Ultimate tensile strength about in, MPa (kgf / mm *) Elongation b *. % Temporary resistance about in. MPa (kgf / mm *) Elongation 6s. % By agreement of the parties

b) expansion on a mandrel with a taper of 7 "- for heat-treated pipes up to an increase in the outer diameter by 8%;

for thermally treated pipes with the State Quality Mark, the expansion test must be carried out until the outer diameter is increased by 10%;

c) beading at an angle of 90 ° - for heat-treated pipes with an outer diameter of 25 mm or more. The bead width, measured from the inner surface of the pipe, must be at least 1.5 times the pipe wall thickness.

Note. Pipes tested for beading are not subject to expansion tests.

d) bend; bending radii must correspond to the range specified in GOST 17380-77; their value is taken by agreement of the parties.

(Modified edition - "Inform. Index of standards" No. 2 1978).

14. At the request of the consumer, heat-treated pipes made of steel grade 12X18H10T are supplied with a guaranteed

grain size within 3-7 points. In this case, the pipes are not subjected to intergranular corrosion control.

15. Pipes must withstand the hydraulic pressure test P = 5.9 MPa (60 kgf / cm 2), but not more than calculated by the formula

where 5 M is the minimum pipe wall thickness, mm;

R - permissible stress, MPa (kgf / mm 2), equal to 40% ultimate tensile strength for steel of this grade;

Du is the inner diameter of the pipe, mm.

At the request of the consumer, the test hydraulic pressure P can be increased, but should not exceed that calculated by the formula.

The hydraulic pressure test can be carried out selectively with 100% physical control of the quality of the welded seam without destroying the pipe, provided that the tightness of all supplied pipes is guaranteed.

16. Finished pipes must be accepted by the technical control of the supplier. The supplier must ensure that all manufactured pipes meet the requirements of this standard.

III. TEST METHODS

17. (Canceled - "Inform. Index of Standards" No. 2 1978).

18. Each pipe in the batch must be inspected and measured. A batch should consist of pipes of the same diameter and wall thickness, made of steel of the same grade and one type of heat treatment. The number of pipes in a batch should not exceed 500 pieces. for pipes with a diameter of up to 30 mm and 300 pcs. for pipes with a diameter over 30 mm.

19. Inspection of pipes should be carried out without the use of magnifying devices. The depth of the defects should be checked in one or more places by filing or otherwise.

,

25. The test for dispensing is carried out in accordance with GOST 8694-75 in a cold state.

26. Test for boarding is carried out in accordance with GOST 8693-80.

27. The bend test is carried out in accordance with GOST 3728-78 in a cold state.

28. The grain size is determined by the base metal of the pipes in accordance with GOST 5639-65.

29. Test for intergranular corrosion is carried out in accordance with GOST 6032-75 by the AM or D method or by both methods simultaneously. The test method is specified in the order.

Notes:

1. Method D is used to test pipes made of OOH18NYuT steel; 08X18H10T and 08XI8H12T.

2. If the order contains a requirement to test pipes for intergranular corrosion, but the method is not specified, the pipes must be tested according to the AM method.

30. Hydraulic testing of pipes is carried out in accordance with GOST 3845-75 with holding them under pressure for at least 10 s.

Each pipe shall be subjected to a hydraulic test.

31. If the test results are unsatisfactory for at least one of the indicators, a repeated test is carried out on it on a double number of samples taken from the same batch of pipes.

STATE STANDARD OF THE UNION OF SSR

By the decree of the USSR State Committee for Standards dated October 20, 1981 No. 4629, the date of introduction was established

01.01.83

The limitation of the validity period was lifted according to the protocol of the Interstate Council for Standardization, Metrology and Certification (IUS 2-93)

State name	The name of the construction management body
The Republic of Azerbaijan	Azgosstandart
Republic of Armenia	Armgosstandart
Republic of Belarus	State Standard of Belarus
The Republic of Kazakhstan	Gosstandart of the Republic of Kazakhstan
Republic of Kyrgyzstan	Kyrgyzstandard
The Republic of Moldova	Moldovastandart
The Russian Federation	Gosstandart of Russia
The Republic of Tajikistan	Tajikgosstandart
Turkmenistan	Main State Inspectorate of Turkmenistan
The Republic of Uzbekistan	Uzgosstandart
	State Standard of Ukraine

This standard applies to electrically welded pipes made of corrosion-resistant (stainless) steels intended for the manufacture of pipelines and various structures.

1. VARIETY

1.1. The dimensions of the pipes must correspond to those indicated in table. ...

Table 1

	Limit deviation		Pipe dimensions, mm	Limit deviation
	Normal Accuracy	Increased accuracy		Normal Accuracy	Increased accuracy
Outside diameter:			Wall thickness:
	± 0.30 mm	± 0.20 mm	from 0 , 8 to 2	± 0.20 mm	± 0.15 mm
St. 20 to 35	± 0.35 mm	± 0.25 mm		± 0.25 mm	± 0.20 mm
	± 1,0 %	± 0,75 %		± 10 %	± 10 %

(Modified edition, Amendment No. 2).

At the request of the consumer, pipes with dimensions 38´ 1.5 and 43 ´ 1.5 mm are made with maximum deviations in the outer diameter of mm.

1.1 - 1.4.

1.5. The ovality and wall thickness of the pipes should not take the dimensions of the pipes beyond the maximum deviations, respectively, in terms of diameter and wall thickness.

1.6. The straightness tolerance of pipes should not exceed 1.5 mm per 1 m of length.

Legend examples

Pipe, with an outer diameter of 25 mm and a wall thickness of 2 mm, of unmeasured length, made of steel grade 08X18H10T:

Pipe 25 ´ 2 - 08X18H10T GOST 11068-81

The same, with a length multiple of 2000 mm:

Pipe 25 ´ 2 ´ 2000 cr - 08X18H10T GOST 11068-81

The same, measured length 6000 mm:

Pipe 25 ´ 2 ´ 6000 - 08X18H10T GOST 11068-81

The same, with increased manufacturing accuracy:

Pipe 25P ´ 2P´ 6000 - 08X18H10T GOST 11068-81

For heat-treated pipes, the letter T is placed after the word pipe.

2. TECHNICAL REQUIREMENTS

2.1. Pipes are manufactured in accordance with the requirements of this standard according to technological regulations, approved in the prescribed manner, from steel grades 10X18H10T and 04X17T with the chemical composition indicated in table. , and steel grades 08Х18Н10Т, 08Х18Т1, 08 X 18 H 10, 12X18H10T, 10X17H13M2T, 10Х17Н13М3Т, 08Х22Н6Т, 08Х21Н6М2Т, 06ХН28МДТ, 08Х17Н13М2Т, 03Х17Н14М3, 03Х18Н10Т with a chemical composition according to GOST 5632-72.

Table 3

	Mass fraction of elements , %
			Manganese
				17, 0 - 19, 0	10, 0 - 11, 0	From 5 (C * -0 , 02) to 0 , 6	0, 020	0, 035
			No more than 0 , 8	16, 5 - 18, 5		From 5 C * to 0 , 60	0, 025	0, 035
* Concentration of carbon in steel,%. Notes: 1. Allowed deviation in the mass fraction of nickel up to minus 0.5%. 2. By agreement of the parties, it is allowed to clarify the chemical composition of the steels.

2.2 Pipes made of steels of grades 08X18H10T, 08X18T1, 10X18H10T, 12X18H10T, 04X17T are manufactured thermally treated with the mechanical properties indicated in table. 226 (23)

2.1, 2.2 (New edition, Amendment No. 2).

2.2.2. By agreement with the customer, pipes can be subjected to cold and warm deformation in the mill line.

(Introduced additionally, Amendment No. 2).

2.3. On the surface of the pipes, lack of penetration, pores, cracks, captivity, flaws, scale, traces of overgrazing are not allowed.

Scratches, traces of straightening, risks, traces of cleaning of defects are allowed if the pipe wall thickness does not exceed the maximum deviations, as well as discoloration resulting from heat treatment or welding.

By agreement with the consumer, it is allowed to supply pipes made of steels 08X18T1 and 04X17T with an oxide film on the surface formed as a result of heat treatment.

The pipes can be produced with a polished outer surface. The roughness is determined by agreement with the consumer.

On the outer surface of the pipes in the places of their contact with the gasket, areas of non-staining caused by the etching technology are allowed.

(New edition, Amendment No. 2).

2.4. The height of the inner bead must not exceed:

0.7 mm - for pipes of general purpose;

0.1 mm - for pipes used for the manufacture of tubular heating elements.

At the request of the consumer, general-purpose pipes with a nominal inner diameter of over 20 mm are made with a burr height of no more than 0.3 mm. The transition from the burr to the pipe walls should be smooth.

2.5. The ends of the pipes should be cut at right angles and deburred. Chamfering when deburring is allowed. At the request of the consumer, it is allowed to manufacture pipes with deburring and internal chamfering from one end, provided that the stripped ends are oriented in one direction.

At the request of the consumer, pipes are made cut in the mill line.

(New edition, Amendment No. 2).

2.6. For chemical engineering, chemical industry, and at the request of the consumer for other industries, heat-treated pipes of their steels of grades 08X18H10T, 10X18H10T, 10X17H13M2T, 10X17H13M3T, 08X22H6T, 08X21H6M2T, 06XH28MDT must withstand the intercrystalline corrosion test.

2.7. Pipes made of steels of grades 08X18H10T, 10X18H10T must withstand the flattening test to a distance ( N) between flattening planes in millimeters, calculated by the formula

where S n - nominal pipe wall thickness, mm;

D n - nominal outer diameter of the pipe, mm.

At the request of the consumer for pipes with a ratioS n / D n , equal to 0.04 or more, distance N should not be more than 1/3D n.

Heat-treated pipes of other steel grades must withstand the flattening test up to a distance N equal to 1/2 of the outer diameter.

Pipes without heat treatment shall withstand the flattening test up to a distance N equal to 2/3 of the outer diameter.

(New edition, Amendment No. 2).

2.8. At the request of the consumer, heat-treated pipes must withstand the following tests:

expansion tests before increasing the outer diameter:

by 12% - for pipes of steel grades 08X18H10T, 08X18T1, 08X18H10, 12X18H10T, 10X18H10T, 04X17T, 03X18H10T, 08X17H13M2T, 03X17H14M3;

by 6% - for pipes made of other steel grades.

By agreement of the parties, pipes made of steels of grades 08X18T1, 10X18H10T, 12X18H10T must withstand the expansion test by 15%;

bead test until the width of the bend is bent, measured from the inner surface of the pipe, equal to 1.5 wall thickness (bead test is carried out on pipes with a diameter of at least 25 mm; bead angle 90° );

bend test (the bend radius is set by agreement between the manufacturer and the consumer).

(New edition, Amendment No. 2).

2.9. At the request of the consumer, the grain size of the metal of finished pipes made of steel grade 10X18H10T and 12X18H10T should be 3 - 7 points.

2.10. Pipes must withstand a test hydraulic pressure of 6 MPa (60 kgf / cm 2) or non-destructive testing of the continuity of the welded seam.

At the request of the consumer, the pipes must withstand the hydraulic pressure ( R 1) in accordance with the requirements of GOST 3845-75, but not more than 20 MPa (200 kgf / cm 2). In this case, the permissible stress in the pipe wall is taken equal to 40% of the ultimate tensile strength.

3. RULES OF ACCEPTANCE

3.1. Pipes are accepted in batches. A batch should consist of pipes of the same size in diameter and wall thickness, one steel grade, one type of heat treatment and be accompanied by one quality document in accordance with GOST 10692-80.

The number of pipes in a batch should be no more than:

500 pcs. - with a diameter of up to 30 mm;

300 pcs. - with a diameter over 30 mm.

3.2. The chemical composition of the steel is taken according to the document on the quality of the original coil steel. In case of disagreement in the assessment of the chemical composition, one pipe from the batch is selected for verification.

3.3. Each pipe in a batch is subject to surface quality and dimensional checks, as well as hydraulic pressure or non-destructive testing of pipes.

At the request of the consumer, when testing the welded seam of pipes by non-destructive methods, an additional hydraulic pressure test is carried out from 10 to 100% of the pipes of the batch.

(Modified edition, Amendment No. 1).

3.4. To check the height of the internal burr, 2% of the pipes from the batch are taken.

3.5. For tensile testing, intergranular corrosion, expansion, beading, bending, flattening, two pipes are taken from the batch. To determine the grain size, one pipe is taken from the batch.

Determination of the yield point of the metal is carried out at the request of the consumer.

3.6. Upon receipt of unsatisfactory test results for at least one of the indicators for it, repeated tests are carried out on a double number of pipes selected from the same batch.

Retest results apply to the entire batch.

4. TEST METHODS

4.1. One sample is cut from each selected pipe for each type of test.

4.2. Chemical analysis is carried out in accordance with GOST 12344-88, GOST 12346-78, GOST 12347-77, GOST 12348-78, GOST 12349-83, GOST 12350-78, GOST 12351-81, GOST 12352-81, GOST 12353-78, GOST 12354-81, GOST 12355-78, GOST 12356-81, GOST 12365-84 or GOST 28473-90,

wall thickness, wall thickness and height of the internal burr - with a micrometer in accordance with GOST 6507-90 or a wall gauge in accordance with GOST 11358-89. The measurement of the height of the inner burr is carried out at a distance of up to 25 mm from the ends of the pipes, and the outer diameter is at least 15 mm from the ends of the pipes.

It is allowed to control the length, outer diameter and wall thickness of pipes by automatic means according to regulatory documents. In case of disagreement in the assessment of the measurement results, control is carried out using the measuring instruments listed above.

(Modified edition, Amendments No. 1, 2).

4.5. The grain size is determined by the base metal in accordance with GOST 5639-82. In this case, pipes are not tested for intergranular corrosion.

4.6. Sampling and intergranular corrosion testing are carried out in accordance with GOST 6032-89. In case of disagreement in the assessment of the results, the tests are carried out according to the method AM GOST 6032-89, except for pipes made of steel grade 06ХН28МДТ.

(Modified edition, Amendment No. 1).

4.7. The tensile test is carried out in accordance with GOST 10006-80 on a longitudinal short sample (in the form of a strip with a seam or a pipe segment). The test speed up to the yield point should be no more than 10 mm / min, beyond the yield point - no more than 40 mm / min.

4.8. The hydraulic test is carried out in accordance with GOST 3845-75 with holding under pressure for at least 5 s.

4.9. The extension test is carried out in accordance with GOST 8694-75 on a mandrel with a taper of 30 °.

4.10. The test for boarding is carried out in accordance with GOST 8693-80.

4.11. The flattening test is carried out in accordance with GOST 8695-75 with the horizontal position of the weld. At the request of the consumer, the test should be carried out at two positions of the weld: horizontally and vertically.

(Modified edition, Amendment No. 2).

4.12. The bend test is carried out in accordance with GOST 3728-78.

4.13. Non-destructive quality control of the weld is carried out in accordance with the regulatory documentation.

4.14. The right angle for cutting pipe ends is not controlled and is determined by the design of the pipe cutting equipment.

(Introduced additionally, Amendment No. 1).

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Marking, packaging, transportation and storage - in accordance with GOST 10692-80.

(Modified edition, Amendment No. 1).

5.2. (Deleted, Amendment No. 2).