... are the first one that produces centrifugal casting ductile iron pipes according to ISO2531 and EN545 in China. ... :K8,K9(2) Effective length:6M by buly shipment,5.7M by 20' or 40' container(3) Inner ... ) Zinc casting:at least 130g/m2 as per ISO8179(5) DN80-DN1600mm(6) T-type(7) High strength ... ,lighter than gray iron,good corrosion resistance,no furring,small flow resistance,easy ...