Procurement Of Manufacture And Supply Of Pre Tensioned Pre Stressed Concrete (Psc) Sleeper Set For 1 In 12 60 Kg(uic)/60 Ei With R260 /Rr350 Ht Rail As Per Rdso S Drawing For General Layout Drg. No T 9790(for 25 T Axle Load) ,For Hts Drg.No:T 8719 And Sleeper S Drawing Nos, T9682 To 9686 , T 9687 To 9769 &Amp T 9770 To 9773 With Latest Alteration (Upto The Date Of Opening Of Tender) And Conforming To Indian Railway Standard (Irs) Specification T 45 (Fourth Revision March2021) For Pr