supply of supply of underground signaling cable of size 12 core x 1.5 sq.mm etc. ( detail description as per item description ) supply of underground signaling cable of size 12 core x 1.5 sq.mm etc. ( detail description as per item description ) , supply of underground armoured, unscreened, railway signalling cable, pvc insulated copper conductor confirming to irs specification no.irs:s-63 / 2014 ( rev.4.0 ) of size: 12core x 1.5. sq. mm. , supply of u / g rrly. signalling cable 12 c x 1.5 sqmm. copper conductor pvc insulated armoured , unscreened under ground cable to spen. no.irs:s 63 / 2014 ( rev ) or latest , supply of underground signaling cable of size 12 core x 1.5 sq.mm as per spec. no. irs:s- 63 / 2007 with amnd 2003 or latest. , supply of underground signaling cable of size 12 core x 1.5 sq.mm as per spec. no. irs:s- 63 / 2007 with amnd 2003 or latest.