Conductor : 0.4,0.5,0.65 or 0.9 mm annealed copper,solid
Insulation : Foam-skin polyethylene or polypropylene insulated
Pairs : Two insulated conductors twisted
Core-covering : Unit construction for cables more than 25 pairs.Concentric for cables up to 25 pairs.
Filling Compound : The interstices between the pair are filled with a filling compound
Core-covering : Non-hygroscopic dielectric tape
Shield : Plastic coated Aluminium tape, thickness 0.2 mm laid on with overlap. The aluminium taps is corrugated for every size of cables.
Flooding Compound : The interstices between non-hygroscopic tape and shield,shield and sheath are filled with a flooding compound.
Sheath : Polyethylene (Black)