| GOST 8734-75. Seamless Steel Tubes Cold-Formed heavy steel tubes
Outside Diameter: 5 – 140 mm
(5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 32; 34; 35; 36; 38; 40; 42; 45; 48; 50; 51; 53; 54; 56; 57; 60; 63; 65; 68; 70; 73; 75; 76; 80; 83; 85; 89; 90; 95; 100; 102; 108; 110; 120; 130; 140)
Wall Thickness: 0,4 – 12 mm
(0,4; 0,5; 0,6; 0,8; 1; 1,2; 1,4; 1,5; 1,6; 1,8; 2; 2,2; 2,5; 2,8; 3; 3,2; 3,5; 4; 4,5; 5; 5,5; 6; 6,5; 7; 7,5; 8; 8,5; 9; 9,5; 10; 11; 12)
Tolerances:
OD:
D 5 – 10 mm: ± 0,15 mm
D 11 – 30 mm: ± 0,30 mm
D 32 – 50 mm: ± 0,40 mm
D 51 – 140 mm: ± 0,8%
WT:
S 0,4 – 1 mm: ± 0,12 mm
S 1,2 – 5 mm: ± 10%
S 5,5 – 12 mm: ± 8%
Notes:
- Steel grades: 10, 20, 35, 45, 10Mn2, 15Cr, 20Cr, 40Cr, 30CrMnSi, 15CrMo acc. to GOST 1050-88, GOST 19281-89, GOST 4543-71. Others steel grades are available subject to agreement.
- Dimensions and tolerances acc. to GOST 8734-75.
- Technical requirements acc. to GOST 8733-74.
- Length from 1.5 to 11.5 m depending on diameter and wall thickness.
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