quality Cable Tray & Galvanized Cable Tray factory

The long-term anti-corrosion use of hot-dip galvanized bridge mainly relies on its unique hot-dip galvanizing process and related characteristics. During the processing of hot-dip galvanized bridge, the steel substrate is completely immersed in high-temperature zinc solution, forming a uniform and highly adhesive layer of zinc iron alloy and pure zinc on the surface of the steel. This zinc layer first serves as a physical isolation, separating the bridge substrate from corrosive media such as air, moisture, acid and alkali salts, preventing direct contact with the substrate metal and thus avoiding corrosion reactions. The chemical properties of zinc are more reactive than iron. In corrosive environments, even if there is slight damage to the surface of the zinc layer, zinc will preferentially undergo oxidation reactions, forming a dense zinc oxide protective film to further prevent the corrosion of the substrate by the corrosive medium. This sacrificial electrochemical protection mechanism is an important guarantee for the long-term anti-corrosion of hot-dip galvanized bridge structures. From the perspective of installation and use, the correct installation method can reduce damage to the zinc layer of the bridge and ensure its integrity. For example, during installation, avoid using sharp tools to excessively tap or scratch the bridge frame to prevent damage to the zinc layer. At the same time, plan the direction and layout of the cable tray reasonably to avoid it being located in areas with water accumulation, humidity, or severe chemical pollution, and reduce the risk of corrosion. In daily maintenance, regularly inspect hot-dip galvanized cable trays to see if there are any peeling, bubbling, rusting, or other phenomena on the zinc layer. For minor damage areas, timely repair can be carried out, such as using zinc rich coating for local brushing to supplement the protective ability of the zinc layer. For severely damaged areas, partial repair or replacement of components can be adopted to ensure that the overall anti-corrosion performance of the bridge is not affected. Through the synergistic effect of the above measures, hot-dip galvanized cable trays can effectively resist corrosion for a long time, ensure the safe and stable transmission of power lines, communication lines, etc., extend their service life, reduce maintenance and replacement costs caused by corrosion, and play an important role in anti-corrosion in the laying of various industrial and civil building lines.

As a supporting project of wiring engineering, there is currently no specialized specification guidance for cable trays, and the specifications and programs of various cable tray manufacturers lack universality. Therefore, the design and selection process should be based on the types and quantities of cables in various weak current systems, and the appropriate cable trays should be selected reasonably.     (1) Determine direction: Determine the routing of cable trays based on the building layout plan, combined with the setting of air conditioning and electrical pipelines, convenient maintenance, and the density of cable routing. Indoors, try to install along the walls, columns, beams, and floor slabs of the building as much as possible. When using a comprehensive pipe gallery for installation, parallel installation should be carried out on one side or above the pipeline, and consideration should be given to avoiding crossing of down conductors and branch lines as much as possible. If there are no other pipe racks to borrow, self installing (supporting) columns is required.   (2) Load calculation: Calculate the weight of cables per unit length on the longitudinal section of the main cable tray.   (3) Determine the width of the cable tray: Determine the model and specifications of the cable tray, the length of the support arm, the length and spacing of the pillars, the width and number of layers of the cable tray based on the number of cables laid, the diameter of the cables, and the spacing between the cables.   (4) Determine installation method: Determine the fixing method of the bridge according to the setting conditions of the site, choose suspended, upright, side wall or hybrid, and the connectors and fasteners are generally supplied together. In addition, select the corresponding cover plate according to the structure of the bridge.   (5) Draw a plan and section diagram of the cable tray, and also draw a spatial diagram of some parts. List the materials.     2. When used in conjunction with power cable trays, the power cables and weak current cables should be placed on one side each, and separated by a partition in the middle.     3. When weak current cables are used in cable trays with other low voltage cables, it is necessary to strictly select weak current cables with external shielding layers to avoid interference between them.

  (1) Remember to use mechanical or manual cutting for cable trays and accessories, and do not use fire welding or electric welding for cutting.   (2) The connections between the trough boxes of the bridge, between the trough boxes and the cover plates, and between the cover plates should be tight and firm.   (3) The distance between the cable tray and the hot surface pipeline must be ensured during the installation process, so as to maximize the safety of the construction personnel.   (4) The installation of cable tray support columns should be equidistant, neat, and meet the design requirements. The installation of cable trays should be horizontal and vertical, neat and beautiful.   (5) The welding parts of the bridge frame during installation should be well treated with anti-corrosion coating.   (6) After the installation of the cable tray is completed, spray the channel numbers on both sides of the cable tray at a certain distance to distinguish them.   (7) Cable supports and hangers in cable interlayers, trenches, and tunnels under the distribution panel should be arranged in a reasonable manner to ensure that cables are neat and avoid crossing.