supply of miscellaneous materials for maintenance of different r.l.i schemes under kalyani (agri-mechanical) division , kalyani,nadia supply of miscellaneous materials for maintenance of different r.l.i schemes. , supply of upvc fittings isi marked is 10124 (part 2) : 2009 with latest amendments-coupler for 160 mm. dia p.v.c. pipe , ci wedge & ms spindle with nut for 150 mm dia sluice valve. (as per sample provided). , supply of cl wedge spindle for 150 mm nominal size alfa alfa valve (as per sample provided). , supply of 150 mm dia nominal bore pvc flexible suction & delivery hose pipe (heavy duty) specifications : ld: min. 151 mm. max. 152.4 mm, wall thickness : min. 7.5 mm, max. 8 mm, pitch of spiral : uniform with tolerance ±2% and reinforcement no. 75 ± 5 per mtr, coil length : 20 mtr., colour : green or gray., hydro static proof / working pressure test: 4 kgf/sq.cm at 27±2° c for 5 min., hydro static burst pressure test : 8 kgf/cm² at 27±2°c for 1 min.. resistance to vacuum : 625mm of hg (approx). loss in mass on heating : < 3% of mass of the sample subject to heating at 130±3 °c for a period of 3 hours. , 150mm dia c.i.nipple/ tail piece both endgrooved, with5 nos.grooves in each side, with 3 coat anticorrosive paint on outer surface