1. The mandrel is made of glass fiber reinforced resin rod, which has high tensile strength (>1100Mpa), about 1.5 to 2 times that of ordinary steel, and 3 to 5 times that of high strength porcelain. In addition, the core rod also has Good vibration damping, creep resistance and fatigue fracture resistance.
2. Umbrella made of silicone rubber-based polymer has good water repellency, corrosion resistance, aging resistance, etc. It can effectively prevent the occurrence of pollution flashovers and reduce manual cleaning. Value maintenance provides a reliable guarantee for the safe operation of transmission lines.