Rate Contract For Manufacture And Supply Of Pretensioned Prestressed Concrete (Psc) Sleeper Set For 1 In 8.5 -60Kg/52Kg Turnout As Per Rdso S Drawing No T-4865 For General Layout And Sleeper S Drawing Nos T-4512, T-4793 To T-4844, T-4786 To T-4790 &Amp T-5471 To T- 5474