... :grey iron,ductile iron,steel casting,aluminum Process:sand ,precision casting OEM grey iron casting shipping valve part 1.We ... are manufacturer and exporter in Dalian,China,specialized in casting and machining, stamping,welding parts. We have 18- ... : • Material:grey iron,ductile iron,steel casting,stainless steel, • Process:sand casting,precision/investment casting • Weight:1.2kg-500kg • OEM service ...