supply & delivery of miscellaneous pvc items for different govt own & operated major rli schemes under assistant engineer ( a-m ) purulia-i ( agri-mech ) sub-division under the jurisdiction of purulia ( agri-mech ) division, belguma, purulia under non-planned maintenance work- 1 200mm nominal outer dia, nominal thickness 4.6 to 5.3 mm. upvc pipes (class-i), is : 4985/2000 certification marked with latest amendments,ivory grey coloured,both end plain, along with one matching coupler/socket (class-ii) duly is :10124/1988 marked & required solvent cement duly is-14182/1994 marked for each pipe. length of each straight pipe 6 mtrs. with tolerence (+)10 mm. 2 straight reducer comperising of three straight reducer of 200 x 180 , 180 x 160 & 160x140 mm duly joined (class-ii), is : 4985/2000 certification marked with latest amendments,ivory grey coloured,both end plain. 160 x 140 mmdia.p.v.c. reducer (class-ii).