Ductile iron manhole covers is a kind of nodular cast iron products, and Inoculants are spheroidal graphite ductile iron by ball, effectively improve the mechanical properties of cast iron, in particular improved ductility and toughness, resulting in higher strength than carbon steel. A high strength cast iron material of the ductile iron was developed in the 1950 of the 20th century, its overall performance is close to steel, is based on its excellent performance, has been successfully used for casting some of the complex of high strength, toughness, wear resistance parts. Rapid development of ductile iron as second only to iron, used a very wide range of cast iron materials. The so-called "iron and steel", mainly referring to the ductile iron.

Product specifications: you can order a variety of specifications, specializing in the production of spheroidal graphite cast iron products, manhole covers, rain grate, trench cover, tree grate, the trees surrounding, Oliveri tree pool, water meter boxes ...