rate contract for supply of materials for repair of distribution transformers at electrical workshop for the year 2021-22 . , supply of : , dpc copper winding wire ( round ) in sizes 11 to 22 swg-fresh , dpc copper strip of sizes for lv winding of distribution transformers 25 kva to 630 kva-fresh , se copper winding wire ( round ) in sizes 11 to 22 swg-fresh , dpc aluminium winding wire ( round ) in sizes from 12 to 20 swg-fresh , dpc aluminium strip of sizes for lv winding of distribution transformers 25 kva to 630 kva - fresh , se aluminium winding wire ( round ) in sizes 12 to 20 swg-fresh , dpc copper winding wire ( round ) in sizes 12 to 20 swg ( in exchange of one kg of scrap of salvaged conductor ) , dpc copper strip of sizes for lv winding of distribution transformers 25 kva to 630 kva ( in exchange of one kg of scrap of salvaged conductor ) , se copper winding wire ( round ) in sizes 11 to 22 swg ( in exchange of one kg of scrap of salvaged conductor ) , dpc aluminium winding wire ( round ) in sizes from 12 to 20 swg ( in exchange of one kg of scrap of salvaged conductor ) , dpc aluminium strip of sizes for lv winding of distribution transformers 25 kva to 630 kva ( in exchange of one kg of scrap of salvaged conductor ) , se aluminium winding wire ( round ) in sizes 12 to 20 swg ( in exchange of one kg of scrap of salvaged conductor ) , lv brass bush rods 12 mm , lv brass bush rods 20 mm , lv brass bush rods 25 mm , lv brass bush rods 30 mm , press card board soft calendared solid 1mm/2mm/3mm ( as per sample ) , press card board pre compressed solid 1mm/2mm/3mm . , ht insulating gum , glass wool sleeves of sizes , aluminium brazing rod ( standard length ) , copper brazing rod ( standard length ) , flexible copper strip ( shim ) 75mm x 0 . 5 mm , pvc sheets 1 mm thick , empire tape 1 , electrical grade kraft paper , 4 mil , lethoride paper 20 mil . , hv bushing , lv bushes 250 amp , lv bushes 630 amp , lv bushes 1000 amp , cotton tape 1 ( size ) 35 m long . , nawara tape 1 ( size ) 35 m long . , rubberized cork sheet 4 mm thick 2ftx3ft , rubberized cork sheet 3mm thick 2ftx3ft , bakelite tubes 12mm dia ( 1 mtr long ) , hv bush clamps ( ms ) , aluminium clamping member ( shoes ) for hv bushing , lv cork washers 12 mm dia , lv cork washers 20mm dia , lv cork washers 25 mm/30 mm dia , nuts & bolts ( m . s ) of sizes . , m . s flat washers . , hv cork washers 110 mm o . d , aluminium welding flux , aluminium flat 4/6/8/10 mm thick of required , copper flat 4/6/8/10 mm thick of required width . , ms plug & caps 1/2 ; 3/4; /1; 1 . 1/4; 1 . 1/2 , oil seal rings ( o-rings ) for lv/hvbush rods 12 mm dia . , oil seal rings ( o . rings ) for lv/hv bush rods 20 mm dia , oil seal rings ( o . rings ) for lv/hv bush rods 25 mm dia , creep tape 1 , cotton cloth , m4 grade crgo silicon steel core laminations/stampings duly insulation coated . of required size as per sample , empire sleeves of sizes , synthetic enamel paint smoke grey colour , paint thinner , steel primer , silica gel , transformer oil , welding rods 3 . 15 mm/4mm . , refilling of oxygen gas for breezing , refilling of lpg gas for breezing