Manufacture And Supply Of Pre-Stressed Mono Block Concrete Sleeper (Pre-Tensioned Ty Pe) For Broad Gauge (1673Mm) As Per Rdso Design For Rdso Drg. No. Rdso/T- 5836 To T-6068 With L Atest Alterations/Amendments Trap Switch Sleepers (Sets) To And To Irs Specifications No. T-45 (4Th Re Vision) March 2021 With Latest Amendments/ Alterations Made By Track Standard Committee As Amen Ded Time To Time During The Currency Of The Contract. [ Warranty Period: 60 Months After The Date Of Delivery ] ]