Wholesale Astm K7 K8 K9 100mm 200 250mm Dn125 Dn2200 Dn500 Dn 600 C40 Dn800 4 Inch Black Cast Ductile Iron Water Pipe Price
Ductile iron pipe refers to the use of more than 18 casting hot metal after the addition of spheroidizing agent, through the centrifugal ductile iron machine high-speed centrifugal casting into the pipe, referred to as the ductile iron pipe, ductile iron pipe and ductile casting pipe. Mainly used for the transmission of tap water, is the ideal choice of water pipeline materials.