Cables Construction

The cable is mainly composed of the following four parts. 1 Conductive core: Made of high conductivity material (copper or aluminum). According to the laying conditions of the requirements for softness of the cable, each core may be formed by twisting a single wire or multiple wires. 2 Insulating layer: The insulating material used for the cable should have high insulation resistance, high breakdown electric field strength, low dielectric loss and low dielectric constant. Insulating materials commonly used in cables include oil-impregnated paper, polyvinyl chloride, polyethylene, crosslinked polyethylene, and rubber. Cables are often classified by insulating materials such as oil-impregnated paper-insulated cables, polyvinyl chloride cables, cross-linked polyethylene cables, and the like. 3 Sealed sheath: protects insulated cores from mechanical, moisture, moisture, chemicals, light, etc. For easily damped insulation, lead or aluminum extruded sealing jackets are generally used. 4 protective cover: to protect the sealing jacket from mechanical damage. General use of galvanized steel, steel wire or copper, copper wire wrapped around the outside of the jacket (called armored cable), armored layer at the same time as the electric field shielding and prevent external electromagnetic interference. In order to avoid the corrosion of the steel and steel wire around the surrounding media, they are usually coated with asphalt or wrapped in layers of impregnated jute or extruded polyethylene, PVC sleeves.

We have a kinds of heat shrink tubes , such as pe heat shrink tubes / dual wall heat shrink tubes / medium wall heat shrink tubes / pvc heat shrink tubes etc. If you want to use for cable , we will recommend it according to your detail information .