GB/T 12226
GB/T 12226 (General purpose industrial valves - Technical specification for gray iron castings)· GB (China) · 4 materials
| Designation | Material group | |
|---|---|---|
| HT 200 | Cast irons | chevron_right |
| HT 250 | Cast irons | chevron_right |
| HT 300 | Cast irons | chevron_right |
| HT 350 | Cast irons | chevron_right |