GB/T 12229
GB/T 12229 (General purpose Industrial valves - Technical specification for carbon steel castings)· GB (中国) · 5 种材料
| 名称 | 材料组别 | |
|---|---|---|
| WCA | 铸钢 | chevron_right |
| WCB | 铸钢 | chevron_right |
| WCC | 铸钢 | chevron_right |
| ZG240-420 | 铸钢 | chevron_right |
| ZG280-480 | 铸钢 | chevron_right |