GB/T 12229
GB/T 12229 (General purpose Industrial valves - Technical specification for carbon steel castings)· GB (China) · 5 materials
| Designation | Material group | |
|---|---|---|
| WCA | Cast steels | chevron_right |
| WCB | Cast steels | chevron_right |
| WCC | Cast steels | chevron_right |
| ZG240-420 | Cast steels | chevron_right |
| ZG280-480 | Cast steels | chevron_right |