Supply Of Manufacture And Supply Of Prestressed Monoblock Concrete Isolated Sleepers For Turnouts Sleepers For 1 In 12 Turnouts And / Or 1 In 8.5 Turnouts Pretensioned Type For Broad Gauge 1673 Mm As Per Rdso Drg.no.rdso/t-4218 For 1:12/60kg, Rdso/t-4865 For 1 In 8.5/60kg.