Ferrous metals, especially iron metal, is the most widely used, but also one of the cheapest price metal materials. Cast iron, especially ductile iron, due to its excellent ductility and toughness, strength than carbon steel, ductile iron has rapidly developed into a behind gray iron cast iron materials, the so-called "iron and steel," mainly refers to ductile iron.
 However, the water-soluble cutting fluid ductile iron rust has been the industry problems, address this situation, our company has successfully developed a the ductile iron rust-proof cutting fluid, after extensive customer applications, has been unanimously praised!