... corporation 1.We are manufacturer and exporter in Dalian,China,specialized in casting and machining, stamping,welding parts. ... 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: ...