supply & delivery of miscellaneous pvc items for different govt own & operated major rli schemes under assistant engineer ( a-m ) purulia-ii ( agri-mech ) sub-division under the jurisdiction of purulia ( agri-mech ) division, belguma, purulia under non-planned maintenance work -1 200 mm dia u.p.v.c. pipe (class-i), is: 4985/2000 certification marked with latest ammendments, ivory gray coloured, both end plain, along with one matching coupler/socket (class-ii) duly is-10124/1988 marked and required solvent cement duly is-14182/1994 marked for each (nominal wall thickness of pipe 2.9 to 3.4 mm) & cipet tested. 2 200 mm dia upvc socket/coupler (cl ii) is 10124(part 1&2)/1988 with latest ammendments & cipet tested 3 160 mm dia u.p.v.c. flanged tail piece with metallic flange (cl ii is 10124(part 6)/1988 with latest ammendments & cipet tested