... process: Green sand casting,Shell sand casting,resin sand casting,auto sand casting line2) Material:----Grey iron,GG15,GG20,GG25,GG30Ductile iron GGG40 GGG50,GGG60,GGG70EN ... is one of professional foundry.We can supplier casting iron part, sand casting steel part,investment casting steel part with the CNC machining. Products ...