... ductile cast iron pipes with c25 c30 c40 1.range dn80-dn1600mm 2.comply with ISO2531 and EN545 3.T- type centrifugal casting ductile iron ... pipes according to ISO2531 and EN545Material:Ductile iron(1) standed:ISO2531-1998,EN545-2006, ... ) T-type(7) High strength ,lighter than gray iron,good corrosion resistance,no furring,small flow resistance,easy fixing ...