... or BS EN545, the coating of the fitting is zinc and bitumen or epoxy.1, Standards : ISO2531, ISO4422, EN545 , EN598 , ... layer, steel crates .5, accessories such as gaskets , bolts and nuts available upon request .6, flanged pipe fittings , double flange ... pipe, push-on Tyton socket fittings , Ductile iron/PVC fittings, K type bolted gland fittings . AWWA C110 flanged pipe fittings ISO2531/BSEN545 ...