The Ductile iron pipes is confim to ISO2531, ISO4179, ISO8179, ISO4633, ISO7186, EN545, EN598, BS4772 Standard. Ductile Iron Flange pipe is mainly used for transferring the drinkable water and acid. With special ductile iron material, this series of pipe fittings can also be used for transferring the acid in the acid plant or transferring slurry. Hundreds of patterns are ready and Max. Dia. Is 1. ...