GB/T 12227

GB/T 12227 (General purpose industrial valves - Technical specification for ductile iron castings)· GB (China) · 6 materials

Designation Material group
QT 500-7 Cast irons chevron_right
QT400-15 Cast irons chevron_right
QT400-18 Cast irons chevron_right
QT400-18L Cast irons chevron_right
QT400-18R Cast irons chevron_right
QT450-10 Cast irons chevron_right