... , 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 ... AWWA C110. 2, material: DI GGG500-7 or other Ductile iron. 3, coating: Fusion bonded epoxy coating; Cement lining inside ...