tender for construction of tubewell lalasar road, sattasar - construction of tube-well up to 100 meter depth and above in all type of rocks by dth system and over burden to accommodate casing pipe of following sized in all types of soils and over burden including lowering of casing pipes but excluding cost of casing pipeof following size 200mm dia 2 supply of erw m.s. black casing pipe isi marked (is 4270/1992) of grade fe 410 of followiing sized at site of work200 mm dia nominal bore5.4 mm thick (as per pwd bsr 5.3)200 mm nominal bore. 3 development of tube well as per is specificatio using suitable compressor to give and free water for required yield of the gravel packed tubewell. 4 display board &contigenccy