GB/T 28909
GB/T 28909 (Extra-high strength structural steel plates in the heat-treatment condition)· GB (China) · 8 materials
| Designation | Material group | |
|---|---|---|
| Q1030D | Structural and constructional steels | chevron_right |
| Q1030E | Structural and constructional steels | chevron_right |
| Q1100D | Structural and constructional steels | chevron_right |
| Q1100E | Structural and constructional steels | chevron_right |
| Q1200D | Structural and constructional steels | chevron_right |
| Q1200E | Structural and constructional steels | chevron_right |
| Q1300D | Structural and constructional steels | chevron_right |
| Q1300E | Structural and constructional steels | chevron_right |