High quality competitive price 8 year's experience of produce and exporting OEM service Grey/ductile iron 1), Product InformationHUITONG Foundry manufactures ... casting part and other alloy casting part.2), MaterialDuctile iron, Grey cast iron, Carbon steel, Alloy steel, Special alloy steel & ... and rigidity, not easy to break. 2.Nodular cast iron products in our company use aluminum film epoxy resin ...