Ductile Iron cast iron pipes used in potable water supply project, ... produce water--cooled centrifugal casting ductile cast iron pipes according to ISO2531 and EN545/598 in ... connection.(6) High strength ,lighter than gray iron,good corrosion resistance,no furring,small flow ... design , pipeline laying, purches pipes fitting , PE sleeving, valves and etc. Ductile iron pipes & fittings comply with ISO ...