Casting Part,Filter body,Valve body. GG20,GG25,GGG40.Green sand or ... Machined casting part.Shot blast surface. Features to Casting Par,Filter body,Valve body: 1.Material :GG20,GG25,GG30 or ... sand or resin sand.4.Melting facilities:cupola furnace or medium frequency induction electric furnace.5.Casting Inspection:direct-reading ... gate valve body,butterfly valve body,ball valve body,Filter body,pump body.