GB/T 30063
GB/T 30063 (Longitudinal submerged arc welded steel tubes for structural purpose)· GB (China) · 17 materials
| Designation | Material group | |
|---|---|---|
| Q235B | Structural and constructional steels | chevron_right |
| Q235C | Structural and constructional steels | chevron_right |
| Q235GJ B | Structural and constructional steels | chevron_right |
| Q235GJ C | Structural and constructional steels | chevron_right |
| Q345B | Structural and constructional steels | chevron_right |
| Q345C | Structural and constructional steels | chevron_right |
| Q345GJ B | Structural and constructional steels | chevron_right |
| Q345GJ C | Structural and constructional steels | chevron_right |
| Q390B | Structural and constructional steels | chevron_right |
| Q390C | Structural and constructional steels | chevron_right |
| Q390GJ C | Structural and constructional steels | chevron_right |
| Q390GJB | Structural and constructional steels | chevron_right |
| Q420B | Structural and constructional steels | chevron_right |
| Q420C | Structural and constructional steels | chevron_right |
| Q420GJ C | Structural and constructional steels | chevron_right |
| Q460C | Structural and constructional steels | chevron_right |
| Q460D | Structural and constructional steels | chevron_right |