Tenders for Supply of Underground, Armoured, Unscreened Railway Signalling Cableheavy Dut Y With High Conductivity Copper Conductor Of Size: 6 Core X 1.5 Sq Mm As Per Rdso S Pecification No.Irs: S-63/2014Rev.4.0 With Latest Amdt.If Any. Warranty Period: 30 Months Aft Er The Date Of Delivery