supply and delivery of ci tail piece and other materials for different rli schemes under kalna(a-m) sub-division under burdwan (agri-mech) division under non plan in the district of purba bardhaman for the f.y. 2025-2026. , 150 mm nb gi pipe, medium class, 4.8 mm thickness, each 6 meter in length conforming to is:1239 (part-i), isi marked, both ends flanged conforming to is:6392 (table-17), isi marked. , 150 mm dia. c.i combined (d. nipple) tail piece (flange thickness 23 mm) and both end grooved, overall length (375) mm with 7 nos. grooved. material shall be cast iron conforming to grade fg 150/200 of is 210. one coat of black japan (type-b) conforming to is: 341/1973. , 150 mm dia. hinged & pin type foot valve c.i. seat ring plate with hinge & pin arrangement and c.i. weight with epdm gasket. as per sample.