ductile iron pipe length 3m (1) The standed:ISO2531-1998,EN545-2006,Class:K12 ( ... 2) DN200-DN1000mm (3) double flanged ductile iron pipe length 3mMaterial:Ductile iron(1) The standed:ISO2531-1998,EN545-2006 ... ,Class:K9(2) Effective length:3m(3) Inner surface cement linning;according to ISO4179 and ...