... drawing Material:grey iron,ductile iron,steel casting,aluminum Process:sand ,precision casting OEM grey iron casting shipping ... cast iron,grey iron,ductile iron,steel,carbon steel,stainless steel,copper,brass,bronze,aluminum,zinc etc. the line ... of product including construction parts,railway parts,automobile parts,parts. Vessel parts etc.. 2.Product instruction: • Material:grey iron,ductile iron ...