... Ductile iron pipe: 1.DN80-1600mm 2.T type joint 3.Cement mortar lining,Zinc coat,bitumen layer 4.Pull strength: >420MPa Ductile iron ... pipe Material:Ductile iron (1) The standard:ISO2531-1998,EN545-2006/EN598, ... for easy connection.(7) High strength,lighter than gray iron,good corrosion resistance,small flow resistance,easy fixing,long life ...