电信电报/电话线

Telecommunication cable / Telephone Cable and wire 5 to 2400 pairs Copper Wire Dia.: 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm Structure of the cable core: every 25 pairs make up one basic unit, one basic unit can be formed with 12 pairs and 13 pairs subunits. 50 super units can be formed with two 12 pairs and two 13 pairs subunits, 100 super pairs can be formed with four 25 pairs basic units. Every unit circle with changeless strip.100 pairs and more than 100 pairs have 1% spare wire pairs, but 6 pairs are the most.HYA53: Steel strip armored moisture barrier polyethylene sheathed local telecommunication cables with copper conductors and solid polyolefin insulation.HYAT: Filling with petrolatum, moisture barrier polyethylene sheathed local telecommunication cables with copper conductors and solid polyolefin insulation.HYAC: Unfilled , moisture barrier polyethylene sheathed local telecommunication cables with copper conductors, solid polyolefin insulation and integral suspension strand.