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60.00 грн
/kg

Seamless steel pipe 127х6 mm GOST 8732 10G2 4290-4400 mm

Product Code: 30816
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60.00 грн
/kg
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Seamless steel pipe 127х6 mm GOST 8732  10G2  4290-4400 mm is manufactured without a welded seam using hot rolling, drawing, or pressing processes. The absence of a weld provides greater tightness, strength, and resistance to temperature and pressure. These pipes are used in the chemical industry, mechanical engineering, oil and gas, construction, and energy. Seamless pipes are made from stainless, alloy, and carbon steels, allowing them to be used under extreme operating conditions and in aggressive environments.

The main thing
Diameter
127х6 mm
Material
Steel
View by manufacturing method
First, a steel ingot is heated in a furnace to a high temperature (1100–1250°C). The red-hot blank is then pierced using a special piercing mill, forming a hollow tube. The tube is rolled on pipe mills or drawn through dies to achieve the desired diameter and wall thickness. The tube is normalized, quenched, or tempered to improve strength and ductility. After this, the tube is straightened, cut to specified lengths, and quality controlled.
Chemical composition
The main elements of steel: Iron (Fe) — (≈ 97–99%), Carbon (C) — 0.05–0.6%, Manganese (Mn) — 0.3–1.5%, Silicon (Si) — up to 0.3–0.6%.
Type by purpose
They are used to transport steam, gas and other substances in the defense industry, shipbuilding and railcar construction and in many heavy industries. Due to its good performance characteristics, this seamless pipe is used in various industries. The price of this material allows you to create extended configurations of pipeline systems and large metal structures from it. This rolled product is needed in construction and mechanical engineering; it is used in the oil and gas industry and chemical plants. Such durable and reliable material is needed wherever it is necessary to prevent leaks of the working substance from pipelines.
A type
Hot rolled round steel pipe
Additional services
Cutting is carried out according to the client's order and packaging of products according to the client's orderSent by any carriers in Ukraine
The country of manufacture
Ukraine

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Questions & Answers

Steel grades of hot-rolled round pipes

Structural alloy steels (GOST 4543): 20KhM, 35KhM, 30KhN2MFA, 38KhN3MA, 40KhN2MA, 40KhN, 25KhGT, 18KhGT, 40KhGSA, 35KhGSA, 30KhGSA, 20KhG, 45Kh, 40Kh, 35Kh, 30Kh, 20Kh, 15Kh.

Carbon steels (GOST 380): St5sp, St5ps, St4sp, St4ps, St3Gsp, St3Gps, St3sp, St3ps, St3kp, St2sp, St2ps, St2kp, St1sp, St1ps, St1kp, St0.

High-quality carbon steels (GOST 1050): 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 08.

Low-alloy steels (GOST 19281): 12GS, 16GS, 15GF, 14G2, 17G1SU, 17G1S, 10G2S1, 09G2S.

Corrosion-resistant steels (GOST 5632): 40Kh13, 30Kh13, 20Kh13, 12Kh13, 03Kh17N14M3, 10Kh17N13M2T, 08Kh18N10T, 12Kh18N10T, 08Kh18N10.

Steel for boilers and pipelines: 20, 10, 20Х1М1F1ТР, 15Х1М1F, 15Х5М, 12Х1МF.

Hot rolled round tube standards

Main GOST standards for hot-rolled pipes

GOST 8731-74 — Seamless hot-formed steel pipes. Technical requirements;

GOST 8732-78 — Seamless hot-formed steel pipes. Assortment.

GOST for hot-formed stainless steel pipes

GOST 9941-81 — Cold-formed and hot-formed stainless steel pipes;

GOST 9940-81 — Seamless hot-formed pipes made of corrosion-resistant steel.

GOST for special hot-formed pipes

GOST 10705-80 — Electric-welded steel pipes;

GOST 20295-85 — Large-diameter welded steel pipes;

GOST 32528-2013 — Steel Pipes for Main Pipelines;

GOST 550-75 — Steel Pipes for Boilers and High-Pressure Pipelines.

GOST for Pipe Materials

GOST 5632-2014 — Stainless and Heat-Resistant Steels;

GOST 19281-2014 — Low-Alloy Steels;

GOST 4543-2016 — Alloyed Structural Steels;

GOST 1050-2013 — High-Quality Carbon Steels.

GOST for Control, Testing, and Requirements

GOST 7566-2018 — Metal Products. General Requirements for Delivery;

GOST 3728-78 — Bend Test;

GOST 8695-75 — Flattening Test;

GOST 10006-80 — Tensile Testing;

GOST 3845-75 — Hydraulic Pressure Testing of Pipes;

GOST 8731-74 — General Specifications.

International Standards

ASTM A335 — Alloy Pipes for High Temperatures;

ASTM A53 — General Purpose Steel Pipes;

ASTM A106 — Seamless Hot-Rolled Pipes;

EN 10216 — Seamless Pressure Pipes;

EN 10210 — Hot-Deformed Pipes.

Table of theoretical weights of 1 meter of hot-rolled seamless round pipes according to (GOST 8732-78)
Outer diameter, mm Wall thickness, mm Approximate weight of 1 meter, kg
25 2,5 - 3,0 1,34 - 1,56
32 2,5 - 4,0 1,78 - 2,68
38 3,0 - 5,0 2,52 - 3,96
45 3,0 - 6,0 3,06 - 5,62
57 3,5 - 8,0 4,56 - 9,56
76 3,5 - 10 6,22 - 16,03
89 4,0 - 10 8,24 - 19,34
108 4,0 - 12 10,13 - 28,52
133 4,0 - 16 12,59 - 47,16
159 4,5 - 20 16,82 - 68,61
219 6,0 - 25 31,06 - 117,48
325 8,0 - 30 62,06 - 215,11