... 3.Pull strength: >420MPa Details of ductile iron ISO2531 puddle pipe:1. Standards : ISO2531, ISO4422, EN545 , EN598 , BS4772 ... available upon request . 5. flanged pipe fittings , double flange pipe, single flange pipe, push-on Tyton socket fittings , Ductile iron ... /PVC fittings, K type bolted gland fittings . AWWA C110 flanged pipe ...