supply of cable 6 core x 1.5 sqmm, pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ] , pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ] , pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ] , pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ] , pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ] , pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ] , pvc insulated underground unscreened armoured railway signalling cable copper conductor size 6 core x 1.5 sq.mm as per rdso spec. no. irs-s-63 / 2014 rev.4.0. [ warranty period: 30 months after the date of delivery ]