... DN1020mmCentrifugal ductile iron pipes are produced by centrifugal casting process of a pipe made of ductile iron. It is widely used in ... water, gas and other fluid media. It has the nature of iron, steel performance, high strength, good toughness, corrosion resistance ... interface, rubber ring seal, and ease of installation.Contact:Ms. chao gaoQingyun Huihuang Exact Casting Co., Ltd.Tel: +86-0534- ...