There are many types of electric heating traces and their uses are different, which leads to the difference in the properties of the electric heating cables. In addition to the difference in the heating temperature of the electric heating cables, the outer sheath of the electric heating cables is one of the important factors affecting the use of the heating cables. When we divide electric heating cables into shielded electric heating cables, explosion-proof electric heating cables, and anti-corrosion electric heating cables, it is also determined by the material of the outer sheath of the electric heating cables. Below we will introduce the commonly used electric heating cable outer sheath.
Basic electric heating cable: It is composed of copper core wire, conductive plastic layer and insulating layer. The insulating layer is the outer sheath layer of the heat tracing. PVC), this material is a polymer material with relatively low molecular structure density, with non-flammability, high strength, weather resistance and excellent geometric stability. This type of electric heating cable is suitable for thermal insulation and heating of pipes in humid areas and outdoor, and at the same time, dangerous areas that need to be grounded electrically.
Shielded heating cable (explosion-proof electric heating cable): a metal shielding layer is added on the basis of the basic electric heating cable. The metal shielding layer can not only be grounded, but also play a role in grounding protection, effectively reducing static electricity, and Reduce the harm caused by static electricity and effectively reduce the possibility of explosion in hazardous areas.
In addition, the metal shielding layer of explosion-proof heat tracing also provides good mechanical properties for the electric heating cable, which can effectively protect the electric heating cable from damage caused by external factors and improve the service life of the heating cable.
Anti-corrosion electric heating cable: the main structure of the outer sheath layer is anti-corrosion materials such as (PF46 and PF26). To a certain degree of protection, the electric heating cable has a longer service life.
Anti-corrosion and explosion-proof electric heating cable: It has the dual characteristics of anti-corrosion heating and explosion-proof electric heating cable. It is covered with a layer of anti-corrosion fluorine material on the basis of explosion-proof heating. It can effectively prevent the influence of the external environment and the electric heating cable, and is very suitable for thermal insulation and antifreeze of chemical, petroleum, fire protection and outdoor pipeline equipment. The function of the metal shielding layer of the electric heating cable is basically the same as that of the explosion-proof electric heating cable, which plays the role of explosion-proof and electrostatic grounding protection.