tender for item description/ heading , dismantling of core and winding from tank and cleaning of all parts properly , cu conductor for primary at present marke of new copper conductor rate , tpc insulation for primary coil , cleaning of cu conductor for secondary coil , tpt insulation of secondary coil , insulation materials (cottontape,glass tape, numinex paper, varnish etc. , cost of brazing rod,oxygen,da etc , providing neoprene synthetic gasket at top cover and inspection cover etc. , cost of terminal bushing insulator with current carrying contact for primary terminal , cost of terminal bushing insulator with current carrying contact for secondary terminal , loading,unloading & transportation cost , testing of transformer after repairing , labour and o/h charges , deduction of scrap value of copper , total impact of gst for the purpose of ctc