... life of 50 years Features:1) Mainly used for municipal administration water supplies, buildings' watersupply, chemicals, food, material ... , prints, pharmaceutical, light industry,papermaking and metallurgy2) For water and other liquids3) Used in irrigation, telecommunications lines, ... 3) Liquid transports pipeline of industry and irrigates pipeline for farming4) Size: ID20 - ID630mm 5) Pressure: ...