tender for supply and delivery of 150 mm dia 90º g.i bend (with priming arrangement)- isi marked and 300 mm dia 5 mm thick rubber insertion conforming to is 638/79 and 150 mm dia ci nipple/tail piece both end groved and different types of gland flange under barasat (a-m) division. , 150 mm dia 90º g.i bend (with priming arrangement)- isi marked, is 1239 part ii, galv is 4736 with latest ammendments , 300 mm dia 5 mm thick rubber insertion with proper reinforcement 2 ply conforming is 638/79 with latest amendments suitable for raised surface of m.s flange as per is 6392/71 (table-5,11 & 17) , 150 mm dia c.i nipple/ tail piece both end grooved with 5 nos grooves in each side with 3 coat anticorrosive paint on other surface , gland flange for venus , gland flange for varuna