GB/T 7659
GB/T 7659 (Steel castings for welding structures)· GB (China) · 11 materials
| Designation | Material group | |
|---|---|---|
| ZG200-400H | Cast steels | chevron_right |
| ZG230-450H | Cast steels | chevron_right |
| ZG270-480H | Cast steels | chevron_right |
| ZG275-485H | Cast steels | chevron_right |
| ZG300-500H | Cast steels | chevron_right |
| ZG340-550H | Cast steels | chevron_right |
| ZGH200-380 | Cast steels | chevron_right |
| ZGH240-450 | Cast steels | chevron_right |
| ZGH270-480 | Cast steels | chevron_right |
| ZGH300-500 | Cast steels | chevron_right |
| ZGH340-550 | Cast steels | chevron_right |