GB/T 12227
GB/T 12227 (General purpose industrial valves - Technical specification for ductile iron castings)· GB (Çin) · 6 malzeme
| Tanım | Malzeme grubu | |
|---|---|---|
| QT 500-7 | Dökme demir | chevron_right |
| QT400-15 | Dökme demir | chevron_right |
| QT400-18 | Dökme demir | chevron_right |
| QT400-18L | Dökme demir | chevron_right |
| QT400-18R | Dökme demir | chevron_right |
| QT450-10 | Dökme demir | chevron_right |