... casting:Product Name: Valve castingMaterials: carbon steel, stainless steelItems:FOB QingdaoLead time:30 -40 daysPlace of Origin: Qingdao, ... We can do different kinds of surface treatment after casting, such as machining, polishing, and plating2) We make ... valves by precision casting, investment casting ( lost wax casting,lost foam casting ) and steel sand casting process in Ningbo,China3) ...