Nanning insulated folding ladder where to sell? Tianjin special electrical insulation material ladders? Insulation co-ladder folding ladder insulation Ⅸ Nanning where to sell? Tianjin special electrical insulation material ladders? Insulation co-ladder folding ladder insulation Ⅸ Nanning where to sell? Tianjin special electrical insulation material ladders? Insulation co-ladder Ⅸ Contact: Xiao Wu order phone '' '' '' '' '1833222140924 hour online ............ QQ: 1758515483 Hebei Five Star Electric Tool is a professional production and sales of insulation ladder manufacturer, we produce quality insulation ladder clearance ., easy to use our high-quality products, quality service to welcome new and old customers to inquire, according to customer specifications require the production of different insulation ladder one, WX- = insulation ladder Overview: insulated ladders, insulation joints ladder, single straight ladder insulation, insulation co-ladder, insulated lifts, telescopic single ladder insulation, insulation co-ladder telescopic, retractable word ladder insulation), insulation level of stool, insulated stools, insulation lifting platform, the whole scaffolding insulation, insulated low stool, Insulation high stool insulation ladder can be powered engineering, telecommunications engineering, electrical engineering, hydropower engineering and other special climbing tools two, WX- insulation co-ladder Features: 1. glass fiber and epoxy resin as the main material of FRP pultrusion profiles processing. 2. parts made of aluminum alloy, anodized surface, shaft steel work surface with a protective coating 3. Insulation class material laminated parts machined surface treated with a varnish. The ladder stays , non-slip design fatigue foot ladder, ladder shape without sharp edges and corners of the components, high safety, high insulation properties 5. Low suction force, flame retardant (common flame retardant grill flame spread rate (ASTM E-84) does not over 25; flame retardant vinyl grill senior propagation rate does not exceed 10. The oxygen index of not less than 28 (GB 8924)), corrosion (with acid and alkali resistance, organic solvents and salts, and many other gas and liquid media The corrosion requirements according to the actual situation, you can choose to use the phthalic economical type, isophthalic type, vinyl resin matrix material), resistant to Kuxiu for live line work;. substation maintenance operation 6. high-strength, Lightweight (FRP grating density is not greater than 2, only 1/4 of the steel, aluminum 2/3 to 10 times the strength of rigid PVC, the absolute intensity level than ordinary aluminum and steel) , impact resistance, insulation resistance, excellent permeability 7. non-conductive, the appearance of new, nice three, insulation co-ladder technical parameters: (1) 2 m insulation co-ladder height: 2 m pedal spacing: 300-400 mm width pedal : 35 mm Maximum load: 1200 N (2) 3 米 insulation co-ladder height: 3 m pedal spacing: 300-400 mm pedal width: 35 mm Maximum load: 1200 N (3) 4 米 insulation co-ladder height: 4 m pedal Spacing: 300-400 mm Width pedal: 35 mm Maximum load: 1200 N (4) 5 米 insulation co-ladder height: 5 m pedal spacing: 300-400 mm Width pedal: 35 mm Maximum load: 1200 N principles of the invention of electronic insulation ladder band theory that electrons in solids present in only allows only a certain energy state, and the energy state may be formed separated from each other band. Electron tends to occupy the lowest energy band, the valence band is insulation ladder can be filled at the absolute zero of the highest energy band, the valence band is called the conduction band above the band, between the valence band and the conduction band the gap is known as the energy gap. Above absolute zero, the valence band is excited electronic parts and transition to the conduction band, becoming the conduction band electrons and valence band holes left. According to band theory, be able to fill or empty with electronic band does not contribute to conductivity, electrical conductivity derived only half full band, conduction band electrons and valence band holes collectively known as carriers. Metallic conduction band is partially filled, so there is a good electrical conductivity. For semiconductors and insulation ladder, insulation ladder at absolute zero degrees valence band is filled, but there is no conduction band electrons. At room temperature, the semiconductor due to a smaller energy gap, can be formed by thermal excitation of electron-hole pair, which has a certain conductivity. In contrast, the vast majority of insulation ladder generally has a very large band gap, valence band electrons are excited to the conduction band is difficult, and therefore the carrier concentration is extremely low insulation ladder, correspondingly conductivity is very low, or that this material insulation.