bids are invited for boq - supply of rr collar ninty , boq - supply of rr collar one hundered ten mm , boq - supply of rr collar one hundered sixty mm , boq - supply of rr collar two hundered mm , boq - supply and delivery at site special moulded variety pvc couplers as per is seveneightthreefour bar ninteen eighty seven and fabricated as per igonetwofour bar nineteen eighty four with isi mark and with its latest amendments nintey mm dia pvc couplers , boq - supply and delivery at site special moulded variety pvc couplers as per is seveneightthreefour bar ninteen eighty seven and fabricated as per igonetwofour bar nineteen eighty four with isi mark and with its latest amendments one hundered ten mm dia pvc couplers , boq - supply and delivery at site special moulded variety pvc couplers as per is seveneightthreefour bar ninteen eighty seven and fabricated as per igonetwofour bar nineteen eighty four with isi mark and with its latest amendments one hundered sixty mm dia pvc couplers , boq - supply and delivery at site special moulded variety pvc couplers as per is seveneightthreefour bar ninteen eighty seven and fabricated as per igonetwofour bar nineteen eighty four with isi mark and with its latest amendments two hundered mm dia pvc couplers , boq - supplying pvc ringtite pipes conforming to is fournineeightfive isto two thousand with latest amendments and conveying to worksite rolling and lowering into trenches laying true to line and level and perfect linking at joints testing and commissioning including loading unloading at both destinations and cuts of pipes wherever necessary including jointing of pvc pipes and specials excluding cost of specials with jointing of approved type with all labour with all lead and lift including encasing the pipe alround to a depth of not less than fifteen cms with soft gravel or selected earth available from the excavation etc complete and giving necessary hydraulic test to the required pressure as per iss contractor will make hi