Welded tubes

Square steel tubes zinc plated

Standard:
GOST 8639-82

Range

30х30х3.0х6000 mm

Mechanical properties

The mechanical properties of heat treated tubes or pipes without any additional heat treatment after rolling heating shall conform to the standards specified in Table. 1

Steel grade Yield strength δt N/mm2(kgf/mm2) Tensile strength δB N/mm2 (kgf/mm2) Relative elongation δ, % Type of pipe
no less
10, 10ps 353 (36) 216 (22) 24 Hot Pipes
20 412 (42) 245 (25) 21
35 510 (52) 294(30) 18
45 549 (56) 323 (33) 14
09G2 441 (45) 294 (30) 20
09G2C 441 (45) 294 (30) 18
10HSND 490 (50) 343 (35) 18
10G2 422 (43) 265 (27) 21
30HGSA 600 (61) 350 (36) 21
10, 10ps 343 (35) 206 (21) 24 Cold pipes
20 412 (42) 245 (25) 20
35 510 (52) 294 (30) 18
45 549 (56) 323 (33) 14
09G2 441 (45) 294 (30) 20
09G2C 441(45) 265 (27) 18
10HSND 490 (50) 343 (35) 18
10G2 422 (43) 265 (27) 21
30HGSA 600 (61) 350 (36) 21
St2sp, St2ps, St2kp 333 (34) 206 (21) 24 Electrowelded pipe, electrowelded cold-pipes, electrowelded hot calibrated pipes
St3sp, St3ps, St3kp 353 (36) 216 (22) 22
St4sp, St4ps, St4kp 412 (42) 245 (25) 21
10, 10ps 333 (34) 206 (21) 24
20 412 (42) 245 (25) 21
St08ps St2ps 333 (34) 206(21) 24 Pipe welding furnace

The mechanical properties of non-heat treated electrowelded pipes must comply with the standards specified in the Table. 2

Steel grade Tensile strength δB N/mm2 (kgf/mm2) Relative elongation δ, %
no less
08U 294 (30) 14
08, 08ps, 08kp 314 (32) 13
St1sp, St1ps, St1kp 333 (34) 11
St2sp, St2ps, St2kp 353 (36) 10
St3sp, St3ps, St3kp 363 (37) 10
St4sp, St4ps, St4kp 372 (38) 10
10, 10ps, 10kp 353 (36) 10
15, 15ps, 15kp 372 (38) 10
20, 20ps, 20kp 372 (38) 10

Package

Welded tubes should be linked to the packages. Package weight must not be more than 10 tons.

For further information, please contact our managers

Tube Division:

+7 (495) 649-65-78 add.102
+7 (916) 747-20-95
greb@bmzm.ru
Head Pipe Division - Dmitry Garkusha