GB/T 12227
GB/T 12227 (General purpose industrial valves - Technical specification for ductile iron castings)· GB (Chine) · 6 matériaux
| Désignation | Groupe de matériaux | |
|---|---|---|
| QT 500-7 | Fontes | chevron_right |
| QT400-15 | Fontes | chevron_right |
| QT400-18 | Fontes | chevron_right |
| QT400-18L | Fontes | chevron_right |
| QT400-18R | Fontes | chevron_right |
| QT450-10 | Fontes | chevron_right |