... ,SC,SS IN SAND,PRECISION/INVESTMETN CASTING OEM SERVICE steel casting valve parts,industrial corporation 1.We ... years experiences with casting parts. Material can be reached cast iron,grey iron,ductile iron,steel,carbon steel,stainless steel,copper,brass,bronze ... etc.. 2.Product instruction: • Material:steel casting • Process:sand casting,precision/investment casting • Standard:ASTM BS DIN ISO JIS ...