Providing, laying in trenches and jointing of HDPE pipes having ISI specification IS:14333, PE100, class PN-6 marked on them, make Reliance/ Hasti / Dura-Line , laying the same in trenches to correct alignment and gradients, cutting and jointing testing for water tightness and making good the leakages and defects including cost of specials complete in all respects. 630mm o/d pipe