The main components of ductile iron pipe with carbon, silicon, manganese, sulfur, phosphorus and magnesium. Implementation of standards GB / T13295-2003 ISO2531 / 2003 ductile iron pipe is defined using the 18th over after adding cast iron ball agent, after the high-speed centrifugal casting machine centrifugal ductile iron pipe cast iron drainage pipe into pieces, called "ductile iron pipe "(DuctileCastIron Pipes), referred to as the ball pipe, ductile iron pipe and ductile iron pipe and so on. Ductile iron pipe, compared with gray cast iron pipe, high strength, good toughness, thin wall, metal with less, can withstand high pressure, the effective length of 5 m and 6 m; by the thickness of different points P, G two. Is the development direction of the cast iron pipe. The connection between the pipe and the pipe, using socket type or flanged interface form; according to the functions can be divided into two kinds of flexible interface and a rigid interface. Flexible interface with a rubber ring seal, to allow a certain limit angle and displacement, which has a good shock resistance and sealing rigid interface is installed easily and quickly than cast iron drainage pipe fittings, according to casting methods, small labor intensity. Company produces cast iron pipe, cast iron pipes fittings, no socket cast iron pipes and other fittings have been sold in Jinan, Beijing, Xi'an, Shenyang, Harbin, Shanghai, Chongqing, Zhengzhou and other major central market, the use of the many projects highly valued. In particular, more than 100 kilometers in Qingdao Laoshan District water supply network transformation in the use of our roads more than 8,000 tons of cast iron pipe, disposable pressure test acceptance approximately 30 km h cast iron drainage pipe, inspection requirements and targets were exceeded national standards, reached ISO6594 international standards. The company will be quality products, competitive price, good reputation sincerely welcome new and old customers to negotiate orders. Cast iron drainage pipe connection, virtue cast iron drainage pipe (certified), cast iron drainage pipe is provided by virtue of Liaocheng Industry Co., Ltd. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) Shandong Liaocheng, steel leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders in the United States and Germany with the staff warmly welcome all inquiries negotiations to create the virtues pipe industry a better future.