GB/T 9711.1
GB/T 9711.1 (Petroleum and natural gas industries. Steel pipe for pipelines. Technical delivery conditions. Part 1: Pipes of requirements class A)· GB (China) · 11 materials
| Designation | Material group | |
|---|---|---|
| L175 Class I | Structural and constructional steels | chevron_right |
| L175 Class II | Structural and constructional steels | chevron_right |
| L210 | Structural and constructional steels | chevron_right |
| L245 | Structural and constructional steels | chevron_right |
| L290 | Structural and constructional steels | chevron_right |
| L320 | Structural and constructional steels | chevron_right |
| L360 | Structural and constructional steels | chevron_right |
| L390 | Structural and constructional steels | chevron_right |
| L415 | Structural and constructional steels | chevron_right |
| L450 | Structural and constructional steels | chevron_right |
| L458 | Structural and constructional steels | chevron_right |