Trough type cable trays, abbreviated as trough bridges, are divided into common trough type cable trays and large span trough type cable trays based on their length. The common slot type cable tray is generally 2 meters in length, and the bottom plate and side plate of the cable tray are usually pressed from a single plate.
Galvanized trough type cable trays can also be treated with spraying technology. After spraying fireproof powder, it has the performance of fire resistance and flame retardancy, and can be used as a fireproof cable tray.
The selection of cable tray specifications should be based on the width and height of the cable tray, which depends on factors such as the diameter of the cable inside the cable tray, the number of layers of cable laying, the cable filling rate, and the space of the cable tray installation site. At the same time, it also needs to consider the development space of actual use.
Bridge transportation refers to the use of trucks and forklifts to transport various structures, specifications, models, and quantities of bridge structures from the manufacturer's production workshop to customers' project sites across the country.
When encountering various weather conditions such as wind, rain, hail, and exposure to sunlight, outdoor cable trays must be made of corrosion-resistant materials (corroded by oxygen) and moisture (corroded by water vapor) if they are located near the seaside or in an external environment with high corrosive gases.
If galvanized sheet material is used for cable tray plates, the requirement for this material is to have a good appearance, and the surface of the plate should not have any areas of missed plating, holes, cracks, or zinc slag.
The cable tray construction project needs to establish a schedule, financial arrangements, building safety, transportation and application of building materials, engineering delays, preparation of bidding documents, and so on.
Tray type cable tray has the characteristics of large load capacity (able to withstand heavy loads), beautiful appearance (beautiful structure), convenient installation (relatively simple laying), and is a widely used building cable tray (used in residential buildings, commercial buildings, and other buildings).
The specifications of the cable tray determine the accessory specifications for supporting bends, tees, crosses, variable diameter straights, variable diameter tees, and connecting pieces, and also determine the cost of the cable tray in the project.
There are several lengths of large-span trough cable trays, including 3 meters, 4 meters, and 6 meters. The side plates of the cable tray are generally corrugated to enhance the safety load per unit length. The bottom plate and side plate of the cable tray are fixed together by welding. Cable tray manufacturers usually use the above processing technology when producing trough cable trays.
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