Details: deep drilling of bore hole 125 mm dia. as per the strata encountered as per is specification by using odex method and lowering of mark-ii hand pump with additional riser pipes/connecting rods. job includes construction of cement concrete platform as per site condition. the job also includes extraction of m.s casing pipe if any required during the drilling work the 125mm dia. m.s. casing pipe isi marked should have thickness of 5.4mm conforming to as per is 4270 / 2001 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 chemical properties of pipe including tensile strength should be in accordance
Sector: Water supply and Sewerage