... : ISO2531, ISO4422, EN545 , EN598 , BS4772 , 2.material : GGG500-7 or other Ductile iron . We supply half ... 1, Standards : ISO2531, ISO4422, EN545 , EN598 , BS4772 ,2.material : GGG500-7 or other Ductile iron . 3, coating : Fusion ... 6, flanged pipe fittings , double flange pipe, single flange pipe, push-on Tyton socket fittings , Ductile iron/PVC fittings, K type bolted gland fittings . Hydrostatic ...