The galvanized cable trunking is a necessary device for cable installation, among which the trough galvanized cable trunking is a common galvanized cable trunking structure;The existing trough galvanized cable trunking is two sides of the plate and the bottom plate arranged between the two sides of the plate, the two sides of the plate and the bottom plate are enclosed to form a groove body, the groove body is placed in the cable.The existing trough galvanized cable trunking is made of metal sheet bent. During construction, the cable is inserted from one end of the trough and dragged to the other end of the trough. The sharp edge of the end face of the trough may damage the cable insulation protection skin.
Hot-dip galvanized cable tray: made of cold-rolled steel plate, surface process is hot-dip galvanized, by trough type, tray type or cascade type straight section, bending, tee, four way components and bracket (arm bracket), hanger, etc., constitute a rigid structure system with tight support cable.
Hot dip galvanizing is one of the best methods to protect steel substrate.It is in the liquid state of zinc, after quite complex physical and chemical action, not only on the steel plating thicker pure zinc layer, but also generate a zinc - iron alloy layer.This plating method not only has the characteristics of corrosion resistance of galvanizing, but also has the zinc-iron alloy layer.It also has a strong corrosion resistance that can not be compared with galvanizing.Therefore, this plating method is especially suitable for all kinds of strong acid, alkali fog and other strong corrosion environment.
Trough type tray installation points
1. trough tray pavement should be short, and should be paved along the wall, along the column or along the beam as far as possible.
2. According to the pavement direction of the trough tray, it is clearly proposed to the civil engineering profession and the construction profession to reserve the hole in the wall, the floor hole and the bracket installation, the required embedded steel plate position and load, and it should be compatible with the processing technology profession, the water heating installation profession and the power profession.
3. The buried metal groove wiring in the ground should be closely coordinated with the civil engineering profession in the design, so as to facilitate the reasonable layout according to different structural types and buildings, and effectively define the selection of line paths and equipment models.
4. Cables with different voltages and different uses are not suitable for paving in the same layer of tray:
(1) Cables above and below 1kV;
(2) double-circuit cable with the same path supplying power to the stage load;
(3) emergency lights and other lighting cables;
(4) Power, control and telecommunications network cables.
If different levels of cables are laid in the same tray, a partition should be added in the middle to separate them.