Electricity transmission LINE FRP cross arms:1, the surface with a polyester carpet surface, thereby enhancing the product's anti-aging properties;2, tube with polyurethane foam to increase the cross arm strength and prevent water infiltration;3, rectangular pipe ends with plastic cover
RP crosshead effective solution to the existing wooden cross arms and cross arm of the corrosion resistance of iron poor, poor flame retardancy and low strength, poor insulation, life and short defects.
Water-absorptivity: "0.3% longitudinal strength: " 500MPa bending strength: " 600MPa compressive strength: " 90MPa thermal conductivity: 0.215J/sqm. S. C thermal-expansion coefficient: 7X10-6 °C Vertical combustion principle (GB2409-84): FV-0 level oxygen index (2406-80): 28-32 horizontal firing (2408-80) I levelvolume resistance: 1012-1015 Ω.cm surface resistance: 1012-1015 Ω coefficient of dielectrical loss: 3-5 the dielectric electricity consumes: 0.05 following breakdown voltage: 35KV/mm above arc proof: 150-180
FRP cross arms