... , 2.material : GGG500-7 or other Ductile iron . We supply half repair clamp according to ISO2531 or BS EN545, the coating ... of the fitting is zinc and bitumen or epoxy.1, Standards : ISO2531, ISO4422, EN545 , EN598 , BS4772 ... plastic layer, steel crates .5, accessories such as gaskets , bolts and nuts available upon request .6, flanged pipe fittings , double flange ...