[Chai Jin cable tray to recommend the star product - Bridge] cable bridge's design is a certain formula to follow the price of galvanized bridge, introduced under the following specific formula: in design calculations, if the actual cable tray The total load capacity with G said: then: G total = n1g1 n2g2 n3g3 ...... Where: g1 g2, g3 ...... are various models within the cable tray weight per unit length. Units (kg / m) n1, n2, n3 is the number of the same model specifications cable. [Chai Jin cable tray to recommend the star product - the bridge] bridge within its control cable does not exceed the total cross section s total cross section of cable tray s. 40% of the principle. Total cross section s control cable is: where: s1, s2, s3 ...... for various control cable bridge in cross-sectional area (including the sheath section) units of mm, d3 ...... within the outer diameter of the cable tray various control The unit is mm; nnn ...... the number of these same types of specifications of the cable. Corresponding control cable tray width b: where h is the height of the cable tray, the unit is mm. When galvanized cable tray installation in indoor bridge, in order to ensure the bridge straight appearance galvanized tray grounded neat line, its horizontal load deformation should generally be controlled within 4.0mm. [Chai Jin cable tray to recommend the star product - the bridge] in accordance with the relevant provisions of the grounding specifications, galvanized cable tray good grounding. (1) Each of galvanized cable tray plate bolts directly contact resistance should be less than 0.005Ω, this time as a cable tray grounding line (dusting cable trays are not suitable for grounding line), the value of each resistor type cable tray press calculated: r = ρ · L / S where: ρ = 15 × 10Ω-6 / cm (20 ℃); L = length calculated according to 100mm; S = cross-sectional area cm2. Galvanized tray price, Guizhou galvanized tray, wire and cable Tianjin Tianjin preferred Chai Jin Chai Jin provided by cable tray Limited. Chai Jin Tianjin cable bridge Limited (www.tjcjdlqj.com) strong, credible, in Tianjin metal building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chai Jin cable tray and you hand into the brilliant, for a better future!