High quality competitive price 8 year's experience of produce and exporting OEM service Grey/ductile iron 1), Product InformationHUITONG Foundry manufactures different metal casting, sand casting part and other alloy casting part.2), MaterialDuctile iron, Grey cast iron, Carbon steel, Alloy steel, Special alloy steel & Stainless steel 1. Strong corrosion resistant ability and rigidity, not easy ...