Supply ductile iron pipe main ingredients are carbon silicon manganese sulfur phosphorus and magnesium. Distributed a certain number of spherical graphite on ferrite and pearlite matrix. Different caliber and for the elongation of the requirements according to nominal. Matrix the proportion of the organization ferrite and pearlite pearlite differ small-diameter ratio is generally not more than 20% of the general control of large diameter of about 25% minimum tensile strength:... 420 / Mpa minimum yield strength of 300. / Mpa. minimum elongation of 7%. ductile iron pipe performance standards GB / T13295-2008 ISO2531 / 2008. Widely used in water transmission pipeline. And food. Pharmacy. Chemical industry production process pipe network. Nominal DN (50-300) * wall thickness T (3.5-7.0) length L3000mm flexible cast iron pipe and pipe fittings. Strictly follow the requirements of GB12772-2008. Adopts the international advanced production technology and centrifugal casting product has a dense metal structure inside and outside finish The walls thin and uniform resistance to corrosion. Easy installation and transportation advantages, especially with a unique advantage in the earthquake. Fire. No noise. recycling use, etc. is widely used in high-rise building drainage. ventilation. and national key projects A higher quality engineering and seismic requirements for fire and other buildings were forced recommended. In the Ministry of Construction "2000 progress and development of urban water supply planning", urban water supply pipeline DN300mm-DN1400mm, cast-iron pipe is recommended mainly ball to determine the specifications Ball cast-iron pipe segment as a future urban water supply pipe network main pipe. In the production of this type of cast-iron pipe ball, according to the "hot metal purification" theory, the use of modern hot metal purification technology, to obtain a more pure high-quality iron, ductile iron pipe, within plus or minus tolerance national standards to produce qualified thin high-strength cast-iron pipe ball, the ball is both important way to increase profits cast-iron pipe manufacturer, but also to make their products with a relatively high-end technology, resulting in fierce competition in the market, certain to win. Ductile iron pipe is mainly known as ductile iron pipe, which has the nature of iron, high performance, corrosion resistance of steel, ductility, good sealing effect, easy to install, mainly for municipal, industrial and mining water, gas, transport oil. Is the preferred water supply pipe, with a high cost. Compared with PE pipe, from the installation time, ductile pipe is easier than PE pipe installation fast and better internal and external bearing pressure after installation; tightness and corrosion protection from the point of view DN900 ductile iron pipe, ductile pipe installation tightness better, it can be improved by means of a variety of corrosion corrosion; from the hydraulic performance point of view, due to ductile pipe specification generally refers to the inside diameter, PE pipe size generally refers to the outer diameter ductile iron pipe DN750, because under the same standard conditions, the ductile pipe energy achieve greater runoff; from a comprehensive look at the cost of installation and maintenance, ductile pipe has a more favorable price. The inner wall of spray zinc, anti-corrosion materials, such as cement mortar. DN650 ductile iron pipe, DN1200 ductile iron pipe, 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. You can also access (www.meidegc.com/supply_details_47732330.html), for more information about the company.