Details: deep drilling of bore hole 125 mm dia. as per the strata encountered as per is specification by using odex method and installation, testing and commissioning of mark-ii hand pump along with additional riser pipes/connecting rods if required. the job also includes construction of cement concrete platform as per site conditions providing of 125 mm dia. m.s.casing pipe. the 125mm dia. m.s. casing pipe isi marked should have thickness of 5.4mm conforming to as per is 4270 / 2001 medium class (part-i) 2004 (heavy c – class, weight per mtrs = 18.11 kg) electric resistance welded beveled ended inside beed free pipes. all pipes from inside and outside to be provided with two coats of anti-corrosive paint of superior/approved quality. there should be no circumferential weld. the pipe from inside should be beed free having smooth finish. each pipe shall have subjected to hydraulic pressure test at the manufacturer works in accordance with is 4270/2001 with latest amendments. all the physical and
Sector: Water supply and Sewerage