The main components of ductile iron pipe with carbon, silicon, manganese, sulfur, phosphorus and magnesium. On the ferrite and pearlite matrix distributed a certain number of spherical graphite, different caliber and in accordance with the requirements of the elongation of the nominal ratio of the matrix structure of ferrite and pearlite different, small-diameter ratio of pearlite General control is generally not more than 20% of new ductile iron pipe, large diameter of about 25%. Minimum tensile strength: 420 / Mpa, minimum yield strength 300 / Mpa, the minimum elongation of 7%. Ductile iron pipe performance standards GB / T13295-2008ISO2531 / 2008. Liaocheng City Pipe Co., Ltd. is located in the virtues of Liaocheng City Development Zone, Liaocheng ductile iron pipe industry is the largest in the creation of the first scale, one of the most powerful companies. Ductile iron pipe is mainly engaged in sales, production processing, warehouse management, logistics and other services ductile iron pipe, the annual distribution of Tianjin Pipe Group, Shanxi TISCO dn350 ductile iron pipe, Shanghai Baosteel Group, Anshan Iron and Steel Group dn2200 ductile iron pipe, climb Chengdu Iron and Steel Group Co., Ltd., Hubei Xinyegang Pipe Co., Ltd. production of various specifications and models of ductile iron pipe, and store adequate supply, inventory year round to maintain tons more. dn500 ductile iron pipe, pipe industry virtues ( certified), Texas Ductile Iron Pipe Co., Ltd. Liaocheng by virtue of Industry. 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.