supply of miscellaneous materials for maintenance of rli schemes under krishnagar ( a-m ) sub-division, under krishnagar ( a-m ) division. , 150 mm ci non return valve, flanged end & swing type with side by-pass arrangement as per is: 5312 ( part 1 ) / 2004 with latest amendment, duly isi marked, weight 40 kg [ previous se office sanctioned rate ] , m.s. hexagonal head bolts & 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 amendmentsfor nuts properties / class for bolt-4.6 & for nut-4, 5.both bolts & nuts are to be duly isi certification marked. ( size m16x80 corresponding is specification ) , m.s. hexagonal head bolts & 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 amendmentsfor nuts properties / class for bolt-4.6 & for nut-4, 5.both bolts & nuts are to be duly isi certification marked. ( size m16x65 corresponding is specification ) , 1 / 2*2 nut & bolt as per sample , 12mm dia steel wire rope ( coil of 25 mtrs ) 6 x 19 ( 12 / 6 / 1 )