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 performance, is a traditional cast iron pipe and the general Pipe 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 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 ductile iron drainage pipe fittings, 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 / T13295-2008 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. Graphite cast iron is spheroidal graphite iron pipes drain the water, the equivalent spherical cast iron there are many gaps. Spherical voids impact strength than cast iron flake small gaps, so the intensity is much higher than normal ductile cast iron strength. " ductile iron water pipe "publish and implement national standards, is a tube mold manufacturing industry is a major event drainage ductile iron pipe specifications, pipe mold industry will provide an important foundation for the rapid development of the drainage ductile iron pipes, pipe die for our country to strengthen the quality of the product requirements, standardize market pipe mold our country, protect and promote the sustainable development of China's mold industry and tube to improve the international competitiveness of China's manufacturing industry has played a positive role in promoting. Drain water supply ductile iron pipe, ductile iron pipe drainage Jinhua, by virtue of Liaocheng virtue Pipe Industry Co., Ltd. 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!