ductile iron pipe ISO2531 EN598 1.range dn80-dn1600mm 2.also supply ductile iron fittings 3.T- type centrifugal casting ductile iron pipes according to ISO2531 and EN545Material:Ductile iron(1) standed:ISO2531-1998,EN545-2006,Class:K8,K9(2) Effective length:6M by (3) Inner surface cement linning according to ISO4179 and outer surface bitumen lining according to ISO8179(4) Zinc casting:at least ...