25 pair solid PE insulation LAP sheathed air core outdoor rallonge CAT3 telephone cable 
 Application:
 Air core duct cable are used for primary underground distribution networks.
 Cable construction:
 Solid annealed copper conductor

Solid PE or foam skin insulation
Core wrapping tape
Aluminium moisture barrier
Extruded black PE sheath
Sheath marking by ink jet

Conductor
Material: 99.99% oxygen-free soft round copper wire, comply with the national standard GB3953-1983
Conductor nominal diameter: 0.5 ± 0.005 mm
Conductor Elongation rate: ≥ 15%
 Insulation
Material: High density polyethylene(HDPE), with density 0.941g/cm3 ,meet the national standard YD / T 760-1995
Insulation integrity: DC spark test 1.5-6KV, every 12Km insulation does not exceed a pinhole or similar defects.
 Insulation Diameter: 0.9± 0.02 mm
 Insulated main colors: white red black yellow purple
 Insulated auxiliary colors: blue orange green brown gray
 Insulation requirements: color does not fade, does not migrate, mechanical and physical properties meet the standard and requirements of GB/T13849.1-93

Welcome to visit our factory and  get our samples.
 Your inquiry will be answered within 24 hours .Wishing to be your long- term partner ,please feel  free to contact me ,we will do our best for you. 
 Choose us, won't make you disappointed:
1.19 years manufactory experience 
2.OEM/ODM available
3.Steady product quality
4.Strict quality control
5.Strictly conform to CE,ROHS,Iso9001
6.Quick delivery time(20ft,25days)