The surface treatment process includes: fire retardant coating, electrostatic spraying and hot dip galvanizing.
Cable trays are used to protect cables.
The full name of the rigid structure system with closely connected supporting cables is composed of straight line segments, elbows, tees, four-way components, booms and hangers. (hereinafter referred to as the bridge). During the installation process, the upwelling bridge has been recognized by the market and the domestic cable bridge industry. The products are made of high-quality cold-rolled steel plates, which have attracted wide attention. Surface technology includes cold galvanizing, hot galvanizing, electrostatic spraying, fire retardant coating and baking paint.
classify
1, cascade cable tray
According to the relevant information at home and abroad, the CQ 1-T stepped cable tray is improved. It has the advantages of light weight, low cost, unique shape, convenient installation, good heat dissipation and ventilation. It is suitable for laying general large-diameter cables and also for laying high and low voltage power cables.
2. Tray cable tray
Tray cable tray is one of the most widely used in petroleum, chemical industry, light industry and telecommunications. It has the advantages of light weight, large load, beautiful appearance, simple structure and convenient installation. It is not only suitable for the installation of power cables, but also suitable for the laying of control cables.
3. Trough cable trough
Trough cable tray is a fully enclosed cable tray. It is most suitable for laying computer cables, communication cables, thermocouple cables and control cables of other highly sensitive systems. It has a good effect on shielding interference of control cables and protecting cables in severely corrosive environment.
Advantages and disadvantages of ladder cable tray, tray cable tray and trough cable tray: ladder cable tray has good ventilation performance, no dust accumulation and no interference. Trough-type and tray-type wiring bridges have dustproof and anti-interference performance.
4. Long-span cable trough
At present, long-span cable bridges are generally assembled by pultruded FRP profiles, which are suitable for power cables, control cables, lighting cables and accessories. Compared with the iron bridge, it has the advantages of long service life (the general design life is 20 years), convenient installation, low cost (the specific gravity is only 1/4 of carbon steel, the construction does not need hot work, and the length of a single bridge can reach 8 meters or even longer), convenient cutting and maintenance-free.
5. Combined cable tray
The combined cable tray is a new type of tray and the second generation cable tray series. It is suitable for laying all kinds of cables in various projects and units, and has the characteristics of simple structure, flexible configuration, convenient installation and novel form.
Selection of cable bridge type and variety;
1. When the cable network needs to be shielded from electrical interference or external influences (such as corrosive liquid, flammable dust and other environments), the (FB) grooved composite anticorrosion shielded cable tray (with cover) shall be selected.
2. Type (F) composite epoxy resin anticorrosion and flame retardant cable tray should be used in strong corrosive environment. Brackets and brackets should also be made of the same material to improve the service life of the bridge, accessories and cable bridge. In the environment or outdoor place where dust is easy to accumulate and needs to be covered, it is advisable to cover the board.
3. In addition to the above, according to the site environment and technical requirements, tray type, trough type, cascade type, glass corrosion-resistant and flame-retardant cable tray or steel common tray can also be selected. In the environment or outdoor place where dust is easy to accumulate and needs to be covered, it is advisable to cover the board.
4, in the public * * * channel or outdoor street section, the bottom of the bottom step should be padded or use a tray in this section. When a large span crosses a public passage, the bearing capacity of the bridge can be improved or the walking frame can be selected according to the user's requirements.
5. The composite bridge (FB) with long span (> 3m) should be selected.