tender for supply of miscellaneous materials for maintenance of different r.l.i schemes under kalyani (agri-mechanical) division , kalyani,nadia , supply of best quality 150 mm(n.b.) g.i.e.r.w. 90º priming bend made from 150 mm nb g.i.e.r.w pipe conforming to is-1239(part-1)/2004 with latest amendments (medium duty) thereof duly welded on both sides of bend on inside and out side with coresponding diameter of m.s. flanges(12 mm) as per is: 6392/1971, table-17 with latest amendments .50 mm nb socket to be used as per is-1239(part-ii)/1992 with latest amendments for priming . both g.i.e.r.w. bend & flanges should be isi certification marked as per annexure - h .galv- is 4736 (as per sample provided). , supply of nuts & bolts : g.i. hexagonal head bolt and nuts bearing is:1363 (part-i)/1992 of product grade -c with latest amendments for bolts & is-1363 (part-3)/1992 of product grade c with latest amendments for nuts properties/ clause for bolts- 4.6 & for nuts- 4.5. both bolts & nuts are to be duly isi certification marked with 2 nos plain ms washer.--m 6x 40 mm [number of bolt in 50 kg = 3650 nos] , m 16x 80 mm [number of bolt in 50 kg = 242 nos] , m 16x 65 mm [number of bolt in 50 kg = 270 nos]