supply of manufacture and supply of metal linermanufacture and supply of metal liner,manufacture and supply of metal liner 60 kg to rdso drg. no. t-8748 (alt-1) for use wit h psc sleeper to rdso drg. no. rdso/t-8746 suitable to 60kg rail and irs specification for metal line r for use with elastic rail clips (provision) %u2013 2013 with latest alteration. (the alt. in drawing and specification issued by rdso up to one month prior to tender opening date shall be applicable in this t ender). [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]