National Cables manufactures Jelly Filled Unarmoured Cables for Ducts. National Cables also manufactures pvc control and power copper and aluminium cable [armoured and unarmoured], house wiring, panel wiring, flexible, frls/frll, submersible, telecommunications, instrumentation, shielded, railway signalling, indoor signalling and industrial wiring in multicores and jelly filled telecom cables. The Jelly Filled Unarmoured Cables for Ducts are used as feeder and distribution cables for connection between exchanges and subscribers. The Jelly Filled Unarmoured Cables for Ducts has solid annealed copper wire in sizes 0.4 mm, 0.5 mm, 0.63 mm and 0.9 mm. These Cables have 10 or 20 pairs of cable assembly. These Cables have galvanised double steel tape.