... ,SS IN SAND,PRECISION/INVESTMETN CASTING OEM SERVICE ductile iron casting valve parts,industrial corporation 1.We are manufacturer ... with casting parts. Material can be reached cast iron,grey iron,ductile iron,steel,carbon steel,stainless steel,copper,brass,bronze, ... . Vessel parts etc.. 2.Product instruction: • Material:cast iron,GG50,GG40,GGG50,GGG40 etc • Process:sand casting,precision/investment ...