WCB sand casting valve bodies 1parts we export to foreigner 2,Different casting technology and machining 3,Perfect appearance WCB precision casting valve bodies1,Material: WCBor ductile iron2,Technology: Resin sand casting,precision casting,lost foam casting,investment casting3,Weight:0.5KG-50kg4,Purfact treatment: Coating,painting5,free of burrs,sand hole and other defect6,we provide OEM sevice ...