Rate Contract For Manufacturing And Supply Of Pre Stressed Mono-Block Concrete Sleeper (Preten Sioned Type Thick Web Switch Expansion Joint (Rdso Drg. No. T-8838) Sleepers ) With M-60 Grade Of Concrete F Or Long Welded Rails 52Kg/60Kg Uic For Bg With Latest Alteration In Drawing With And Latest Specification Or Corri Gendum If Any Up To The Date Of Opening Of Tender And Conforming To Indian Railway Standard (Irs)Specificatio N T-39 (Sixth Revision Mar.2021) For Pretensioned Prestressed Concrete(Psc) Sleepers For With Up To Date Ame Ndment (Upto The Date Of Opening Of Tender) [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitted: Max 8 Lacs ] ]