Providing, Stringing out, cutting, Jointing and testing of THiN WALLED FLEXiBLE QUiCK COUPLiNG PiPES as per iS 11722/86 (iSi marked with the prior approval of Engineer-in-Charge)laying the same in trenches to correct alignment and gradients, jointed with coupler including cost of specials and all cartage complete. 304.80mm o/d pipe lines laid complete