Ductile iron pipe water supply: water supply cast iron pipe using the 18th over after adding cast iron ball agent later, after high-speed centrifugal ductile iron casting machine into a pipe, ductile iron pipe nature has excellent performance, corrosion resistance of steel, ductility, good sealing effect, easy to install, mainly for municipal, industrial and mining water, gas, oil, etc. Water pipes are preferred dn500 centrifugal ductile iron pipe, with a very high price. Liaocheng virtue Pipe Co., Ltd. ductile iron pipe is ideal for the urban water supply pipe, gas pipe network, set high strength, ductility, and corrosion resistance strong advantages, with the nature of iron, steel, ductile iron pipe plant performance is traditional cast iron pipe and ordinary steel replacement products; the main component 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 centrifugal ductile iron pipe fittings, proportion matrix organization ferrite and pearlite vary depending on the nominal diameter and elongation requirements, small-caliber general control of pearlite ratio is generally not more than 20%, large diameter of about 25%. Minimum tensile strength: 420 / Mpa centrifugal ductile iron pipe, minimum yield strength 300 / Mpa, the minimum elongation of 7%. Ductile iron pipe performance standards GB / T13295-2008 ISO2531 / 2008. Water-cooled metal mold centrifugal ductile iron pipe production technology and equipment in 1994 through the national scientific and technological achievements; ductile iron pipe year 1994 was named national new products; ductile iron pipe in 2002 by the National Metallurgical Product Quality Gold Award. Products undergo rigorous composition analysis, metallurgical testing, dimensional inspection, surface quality inspection, pressure ring test, tensile testing, hardness testing, hydrostatic testing, leak test, the thickness of the lining and the outer coating, such as quality inspection. All of the above test items qualified factory rear granted. GB ductile iron pipe specifications --- k9 grade ductile iron pipe specifications Spot / T-interface to the water pipes, ductile iron pipe Daquan --- GB T-k9 grade ductile iron pipe, ductile iron pipe ---- nature has iron, steel performance, excellent corrosion resistance, ductility good, easy to install, mainly for municipal, industrial and mining water, gas and so on. Centrifugal ductile iron pipe plant | ductile iron pipe | Pipe Co., Ltd. is provided by virtue of virtue Liaocheng Pipe. Liaocheng virtue Pipe Co., Ltd. (www.meidegc.com) (www.meidegc.com) (www.mdwfg.com) (www.mdggc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead virtue of Industry and you work into the brilliant, for a better future!