tender for manufacture and supply of glass filled nylon-66 insulating liners for use with erc mk-iii flat toeon concrete sleeper for 52 kg. rails to drawing no.rdso/t- 3702 alteration-7 with latest alteration if anyconforming to irs specification for gfn liners t-44-1995 corrigendum no.6 of mar 2018 with latest corrigendumissued up to 20 days prior to the date of closing of tender .