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