GOST R 71991
GOST R 71991 (Steel welded pipes, produced by submerged arc welding for lower temperatures. Technical specifications)· GOST (Russia) · 14 materials
| Designation | Material group | |
|---|---|---|
| CA 55 | Structural and constructional steels | chevron_right |
| CB 60 | Structural and constructional steels | chevron_right |
| CB 65 | Structural and constructional steels | chevron_right |
| CB 70 | Structural and constructional steels | chevron_right |
| CC 60 | Structural and constructional steels | chevron_right |
| CC 65 | Structural and constructional steels | chevron_right |
| CC 70 | Structural and constructional steels | chevron_right |
| CD 70 | Structural and constructional steels | chevron_right |
| CD 80 | Structural and constructional steels | chevron_right |
| CFA 65 | Structural and constructional steels | chevron_right |
| CFB 70 | Structural and constructional steels | chevron_right |
| CFD 65 | Structural and constructional steels | chevron_right |
| CFE 70 | Structural and constructional steels | chevron_right |
| CG 100 | Structural and constructional steels | chevron_right |