... .DN100-1000mm 3.Pull strength: >420MPa Details of inch ductile iron pipe:(1) The standed:ISO2531-1998,EN545-2006,Class:K8 ... :6M by buly shipment,5.7M by 20' or 40' container (3)Sureface treatment : Inner surface cement linning according to ISO4179 ... ) T-type K-type(8) High strength ,lighter than gray iron,good corrosion resistance,no furring,small flow resistance, easy fixing ...