Tender For manufacture and supply of prestressedconcretesleeper for m.g. 52 kg & 60 kg (uic) / 60e1 rails to rdso drg. no. t-3504 with alt-5 and conforming to irs specification for psc sleepers for broad gauge, metre gauge and narrow gauge serial no. t-39-2021 (sixth revision march 2021) with corrigendum no. 1 . (the alt in drawing and specification issued by rdso up to tender closing date shall be applicable.)