supply and delivery of set or mtr of upvc pipes of bankura stores under ridf project , for bankura ( a-m ) res stores , ridf , supply & delivery of upvc pipes ( class-i / ii ) , is: 4985 / 2000 certification marked with latest amendments . ivory grey , both end plain along with one matching coupler / socket ( class-ii ) duly is-10124 / 2009 marked & required solvent cement duly is-14182 / 1994 marked for each pipe . length of each straight pipe 6 mts with tolerance ( + ) 10mm with latest amendments , major rli pipe set , midi rli pipe set type-i , midi rli pipe set type-ii , mini rli pipe set type-i , mini rli pipe set type-ii , mdtw pipe sets