About Product:Ductile cast iron pipe is made of minerals or rare earth minerals combined with gold spheroidizing agent, which is added into the molten iron before pouring to make graphite spheroidizing, Reduce the stress concentration, and make the pipe have the advantages of high strength, high elongation, Good impact and corrosion resistance and good sealing. The inner wall is lined with cement cement, which improves The water delivery environment, Little of the water supply capacity and reduces the energy consumption. The flexible interface is adopted at the pipe expressions using, and the pipe material itself has a large elongation, In buried pipe, the pipe can work with the soil around the pipe to improve the stress state of the pipe, which makes the pipe more flexible. Thus improving the reliability of the pipe network operation. At present, ductile iron pipes are usually used as fittings in China's water supply industry