Description

Delivery standard

Size, mm

Steel grades

Water and gas mains pipes

GOST 3262-75

Ø 21.3-50.0

GOST 380, GOST 1050-88

Shaped steel pipes 
(Square pipes )

GOST 13663-86 (GOST 8639-82)

25 x 25 x 2

Group B without heat treatment 
St2(kp, ps, sp), St4(kp, ps, sp), 08kp, 10(ps, sp)

Shaped steel pipes 
(Rectangular pipes )

GOST 13663-86 
(GOST 8645-68)

28 x 25 x 2 
40 x 25 x 2 
50 x 25 x 2, etc.

Group B without heat treatment 
St2(kp, ps, sp), St4(kp, ps, sp), 08kp, 10(ps, sp)

Electric longitudinal welded pipes

GOST 10705-80 
(GOST 10704-91)

Ø 21.3 – 159.0

St1- St3(kp, ps, sp), 08, 10, 15, 20(kp, ps, sp)

Electric welded galvanized pipes

TU 14-101-535-2004, meas. 1, 2

Ø 21.3 – 159.0

grades as per GOST 380, GOST 1050, GOST 9045