We produce centrifugal casting ductile iron pipes according to ISO2531 and EN545 in China.. There are ... 200 thousand tons per year covering 17 sizes.Material: Ductile iron(1) The standard: ISO2531-1998, EN545-2006, Class: K8, K9 ... -DN1200mm(6) T type(7) High stength, lighter than gray iron, good corrosion resistance, no furring, small flow resistance, easy fixing ...