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 ductile iron pipe plant, different caliber and in accordance with the requirements of the elongation of the nominal ratio of the matrix structure of ferrite and pearlite differ dn500 centrifugal ductile iron pipe, small-diameter ratio of pearlite generally not more than 20% dn300 centrifugal ductile iron pipe, large diameter generally controlled at 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. Professional manufacturer of ductile iron pipe sales units. Our ductile pipe ISO2531-98E standards are in line with the company to maintain annual cash more than 10,000 tons. Specifications GB DN100-DN1200 ductile pipe complete. Using blast furnace production of phosphorus. Sulfur in high-quality cast iron. ductile iron pipe according to the international advanced centrifugal casting current annealing processes. water-cooled metal mold centrifugal casting machine casting made. After annealing socket dressing. hydrostatic test. internal corrosion of reinforced steel frame. ductile pipe prices in the form of T-type interface. Standard wall K9 grade level is .10 or higher grade level standard effective length of 6 m. Centrifugal ductile iron pipe plant | virtues Industry | Baoji centrifugal ductile iron 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.