... , 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 ... max. Height of 2 meters. Also we can supply weld flange pipes ,the Lenth is 2-5.8 meters.1, Standards ...