Ductile iron pipe (1) Material:Ductile iron (2) The standed:ISO2531-1998,EN545-2006,Class:K9 (3) DN80-800mm (4) T-type Ductile iron self restrained pipes ... co., ltd as below features:(1) Material:Ductile iron(2) The standed:ISO2531-1998,EN545-2006,Class:K9(3) Effective length:6M ... ) T-type(8) High strength ,lighter than gray iron,good corrosion resistance,no furring,small flow resistance,easy fixing ...