GOST 19277-73. Seamless Steel Tubes for Oil and Fuel Lines
Outside Diameter:
4 - 70 mm (4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 24; 25; 27; 28; 30; 32; 34; 35; 36; 38; 40; 42; 45; 48; 50; 53; 56; 60; 63; 65; 70)
Wall Thickness:
0,5 - 3,0 mm (0,5; 0,6; 0,7; 0,8; 0,9; 1; 1,2; 1,4; 1,5; 1,6; 1,8; 2; 2,2; 2,5; 2,8; 3)
Notes:
- Steel grades: 20A, 30CrMnSi, 30CrMnSi-VD, 08Cr18Ni10Ti, 08Cr18Ni10Ti-VD, 12Cr18Ni10Ti, 12Cr18Ni10Ti-VD.
- The pipes from steel grades 08Cr18Ni10Ti, 08Cr18Ni10Ti-VD, 12CrNi10Ti, 12CrNi10Ti-VD with electro-chemical polishing of surface are to be produced subject to agreement.
- Random and fixed length: for steel grades 08Cr18Ni10Ti, 08Cr18Ni10Ti-VD, 12Cr18Ni10Ti, 12Cr18Ni10Ti-VD - 1,5-10 m.
For steel grades 20A, 30CrMnSi, 30rMnSi-VD - 2-7 m.
- Pipes are delivered with grinded external surface and etched internal surface, with roughness of grinded surface of group A.
- Pipes pass 100% non-destructive test.
|
| Sizes |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
OD, mm |
WT, mm |
4; 5 |
0,5 - 0,8 |
8 - 21 |
0,5 - 2 |
42 - 70 |
1 - 3 |
6 |
0,5 - 1,4 |
22 - 38 |
0,5 - 3 |
|
|
7 |
0,5 - 1,5 |
40 |
0,8 - 3 |
|
|
| Mechanical properties |
Steel Grade |
Tensile Strength, N/mm2 (min) |
Elongation, % (min) |
20A |
392 |
22 |
30CrMnSi |
490 |
18 |
08Cr18Ni10Ti, 08Cr18Ni10Ti-VD |
549 |
40 |
12Cr18Ni10Ti, 12Cr18Ni10Ti-VD |
549 |
40 |
| Chemical Composition (%, max) |
Steel Grade |
C |
Si |
Mn |
Cr |
Ni |
S |
P |
Cu |
Ti |
20A |
0,17-0,24 |
0,17-0,37 |
0,35-0,65 |
0,25 |
0,25 |
0,03 |
0,025 |
0,30 |
- |
30CrMnSi |
0,28-0,34 |
0,9-1,2 |
0,8-1,1 |
0,8-1,1 |
0,3 |
0,005 |
0,025 |
- |
- |
08Cr18Ni10Ti |
0,08 |
0,8 |
2 |
17-19 |
9-11 |
0,02 |
0,035 |
- |
5*C-0,7 |
12Cr18Ni10Ti |
0,12 |
0,8 |
2 |
17-19 |
9-11 |
0,02 |
0,035 |
- |
5*C-0,8 |
12Cr18Ni10Ti-VD |
0,12 |
0,8 |
2 |
17-19 |
9-11 |
0,015 |
0,015 |
- |
(C-0,02)*5-0,7 |
|
