tender for manufacture and supply of 60kg metal liner for use with erc mk-v, 25t wider psc sleeper (rt-7008 and rt-8527) conforming to rdso drg. no t-8616 & t-8617, alt-1 with latest alteration as on date ofclosing of this e-tender. each set of metal liner comprises of one metal liner to drg. no t-8616 and one metalliner to drg. no. t-8617. specification: irs specification for metal liners for use with erc (provisional)-2013with corrigendum no. 1 of oct-2016 and latest corrigendum if any as on date of closing of the e-tender. this is asafety item.