... of ductile iron ISO2531 puddle pipe:1. Standards : ISO2531, ISO4422, EN545 , EN598 , BS4772 , AWWA C110 . 2. material : GGG500-7 or other ... and nuts available upon request . 5. flanged pipe fittings , double flange pipe, single flange pipe, push-on Tyton socket fittings , Ductile iron ... fittings, K type bolted gland fittings . AWWA C110 flanged pipe fittings Welcome to visit our website and our foundry