supply of manufacture and supply of wider prestressed concrete sleepers for sharp curves rdso drg. no. t-8979 to t-8982manufacture and supply of wider prestressed concrete sleepers for sharp curves rdso drg. no. t-8979 to t-8982,manufacture and supply of wider prestressed concrete sleepers for sharp curves (of ra dius less than 350 m) conforming to rdso drg. no. t-8979, alt-2 for 25 t axle load for 60kg (uic)/60 e1 rails. specification : irs specification for pretensioned prestressed concrete sleepers for broad ga uge, metre gauge and narrow gauge sl. no. t-39-2021(6 th revision march-2021). [ warranty perio d: 60 months after the date of delivery ] ] dy.ce.c.wat, ecor andhra pradesh 6424.00 numbers , manufacture and supply of wider prestressed concrete sleepers for sharp curves (of ra dius less than 350 m) conforming to rdso drg. no. t-8980, alt-2 for 25 t axle load for 60kg (uic)/60 e1 rails. specification : irs specification for pretensioned prestressed concrete sleepers for broad ga uge, metre gauge and narrow gauge sl. no. t-39-2021(6 th revision march-2021). [ warranty perio d: 60 months after the date of delivery ] ] dy.ce.c.wat, ecor andhra pradesh 6424.00 numbers , manufacture and supply of wider prestressed concrete sleepers for sharp curves (of ra dius less than 350 m) conforming to rdso drg. no. t-8981, alt-2 for 25 t axle load for 60kg (uic)/60 e1 rails. specification : irs specification for pretensioned prestressed concrete sleepers for broad ga uge, metre gauge and narrow gauge sl. no. t-39-2021(6 th revision march-2021). [ warranty perio d: 60 months after the date of delivery ] ] dy.ce.c.wat, ecor andhra pradesh 6424.00 numbers , manufacture and supply of wider prestressed concrete sleepers for sharp curves (of ra dius less than 350 m) conforming to rdso drg. no. t-8982, alt-2 for 25 t axle load for 60kg (uic)/60 e1 rails. specification : irs specification for pretensioned prestressed concrete sleepers for broad ga uge,metre gauge and narrow gauge sl. no. t-39-2021(6 th revision march-2021). [ warranty perio d: 60 months after the date of delivery ] ] dy.ce.c.wat, ecor andhra pradesh 24139.00 numbers pwi bchl, ecor andhra pradesh 137.00 numbers