Questions & Answers
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): St4sp, St4ps, St3Gsp, St3Gps, St3sp, St3ps, St3kp, St2sp, St2ps, St2kp, St1sp, St1ps, St1kp, St0.
High-quality carbon steels (GOST 1050): 50, 45, 40, 35, 30, 25, 20, 15, 10, 08.
Pipeline steels: 20Kh1M1F1TR, 15Kh1M1F, 12Kh1MF, 09G2S, 20, 10, 15Kh5M.
Low-alloy steels (GOST 19281): 17G1SU, 17G1S, 10G2S1, 09G2S, 12GS, 16GS, 15GF, 14G2.
Corrosion-resistant steels (GOST 5632): 03Х17Н14М3, 10Х17Н13М2Т, 08Х18Н10Т, 12Х18Н10Т, 08Х18Н10, 20Х13, 30Х13, 12Х13, 40Х13.
GOST for Profile Pipes
GOST 8645-68 — Rectangular Steel Pipes. Assortment;
GOST 8639-82 — Square Steel Pipes. Assortment.
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 3728-78 — Bend Test;
GOST 8695-75 — Flattening Test;
GOST 10006-80 — Tensile Testing;
GOST 3845-75 — Hydraulic Testing;
GOST 7565-81 — Sampling;
GOST 7566-2018 — General Requirements for Metal Products.
Main GOSTs for Seamless Pipes (Basis for Profile Pipes)
GOST 8733-74 — Seamless Cold-Formed Pipes. Technical Requirements;
GOST 8734-75 — Seamless Cold-Formed Pipes. Assortment;
GOST 8731-74 — Seamless Hot-Formed Steel Pipes. Technical Requirements;
GOST 8732-78 — Seamless Hot-Formed Steel Pipes. Assortment.
GOST for Special Seamless Pipes
GOST 9940-81 — Seamless Hot-Deformed Stainless Steel Pipes;
GOST 9567-75 — Seamless Cold-Deformed Precision Pipes;
GOST 9941-81 — Seamless Cold-Deformed Stainless Steel Pipes;
GOST 550-75 — Pipes for High-Pressure Boilers and Pipelines.
International Standards
ASTM A519 — Seamless Mechanical Tubing;
ASTM A213 — Seamless Alloy Steel Pipes;
ASTM A106 — Seamless General-Purpose Pipes;
EN 10216 — Seamless Pressure Tubes;
EN 10210 — Hot-Deformed Seamless Profile Tubes.
| Profile size, mm | Wall thickness, mm | Weight of one linear meter, kg |
| 20х20 | 2,0 | 1,11 |
| 25х25 | 2,0 | 1,39 |
| 25х25 | 3,0 | 1,95 |
| 30х30 | 3,0 | 2,38 |
| 30х30 | 2,0 | 1,69 |
| 40х40 | 4,0 | 4,08 |
| 40х40 | 3,0 | 3,24 |
| 40х40 | 2,0 | 2,33 |
| 50х50 | 4,0 | 5,25 |
| 50х50 | 3,0 | 4,13 |
| 60х60 | 4,0 | 6,42 |
| 60х60 | 3,0 | 5,01 |
| 80х80 | 5,0 | 10,6 |
| 80х80 | 4,0 | 8,76 |
| 100х100 | 5,0 | 14,12 |
| 100х100 | 4,0 | 11,1 |
| 120х120 | 6,0 | 19,86 |
| 140х140 | 6,0 | 24,76 |
| 150х150 | 5,0 | 22,43 |