Design, manufacture, installation and commissioning of rolling pontoon type dismantling barge along with electro- mechanical equipments on river Fulhar at Intake Station of Balupur water supply scheme under Ratua- I Block in the District of Malda under Malda Mechanical Division, PHE Dte. Supply and Delivery of Valves, Air Valves, Specials and Fittings of HDPE Material of different diameter as per Annexure –B.