The specification of ladder type cable tray is width * height. There is no limited description standard in the source scope. If the ladder type cable tray is width Zhi and height, the manufacturer's standard shall be followed: the minimum allowable width is 100mm and the minimum allowable height is 80mm.
Wall thickness description of ladder cable tray:
According to the standard cecs31:2006, tray and ladder cable tray width ~ allowable plate thickness
Cable tray width ≤ 150~ 1.0
150 ＜ cable tray width ≤ 300~ 1.2
300 ＜ cable tray width ≤ 500~ 1.5
Electrogalvanized Zinc (also known as zinc plated or electroplated) is the process by which a coating of zinc is deposited on the steel by electrolysis from a bath of zinc salts. This finish is standard for cable tray hardware and some accessories for aluminum and pre-galvanized systems. A rating of SC3, our standard, provides a minimum zinc coating thickness of .5 mils (excluding threaded rod, which is SC1 = .2 mils) When exposed to air and moisture, zinc forms a tough, adherent, protective film consisting of a mixture of zinc oxides, hydroxides, and carbonates. This film is in itself a barrier coating which slows subsequent corrosive attack on the zinc. This coating is usually recommended for indoor use in relatively dry areas, as it provides ninety-six hours protection in salt spray testing per ASTM B117.
The cable ladder is a prefabricated metal structure, which is composed of two side rails and connected by separate transverse members or rungs. Trapezoidal trays are the most common and economical tray type and also provide maximum ventilation for wiring.
