... part.Shot blast surface. Features to Casting Par,Filter body,Valve body: 1.Material :GG20,GG25,GG30 or GGG40.2 ... furnace.5.Casting Inspection:direct-reading spectrum instrument,metallographic analysis,ultrasonic inspection,magnetic particle detector,mechanical properties inspection.6 ... and others.10.Representative product:gate valve body,butterfly valve body,ball valve body,Filter body,pump body.