Product parameters
| Product Name: | Pre-Galvanized Cable Tray | ||||||||
| Type: | Cable tray/Channel cable tray/Perforated cable tray/Tray type cable tray | ||||||||
| Material: | Cold-Rolled Steel/Hot-Rolled Steel | ||||||||
| Surface Treatment: | Zinc Coating | ||||||||
Product Size:
| Width: | 50-1200mm | ||||||||
| Side Rail Height: | 25-300mm | ||||||||
| Length: | 2000mm,3000-6000mm or Customization | ||||||||
| Thickness: | 0.6-3mm | ||||||||
Steel Thickness (Recommend)
| 1.0mm-Width: | 50~100mm | |||||||||
| 1.2mm--Width: | 100~150mm | |||||||||
| 1.5mm--Width: | 200~500mm | |||||||||
| 2.0mm--Width: | 600~700mm | |||||||||
| 2.5mm--Width: | 800~1000mm | |||||||||
| Customized according to customer requirements | ||||||||||
Other Characteristics
| Color: | As customer requirements | ||||||||
| Certification: | CMA/ILAC-MRA/CNAS/CE | ||||||||
| Application: | Wiring system,cable management,electromechanical system,construction industry and so on | ||||||||
| Non standard specifications are availabe according to customer's requirement | |||||||||
Pre-galvanized cable tray refers to the process of galvanizing steel plates or steel strips before processing them into cable trays during the production process. Compared with ordinary steel cable trays or post-galvanized cable trays, it has significant advantages in corrosion resistance, strength, economy, etc., and is widely used in power, communication, construction and other industries.
01
Economical And Efficient
The pre-galvanizing process is adopted, and the cost is 20% lower than that of hot-dip galvanizing, which is suitable for budget-sensitive projects.
02
Uniform Corrosion Resistance
The zinc layer is fully covered, the thickness is ≥20μm, and it passes the 500-hour neutral salt spray test.
03
Easy To Install
The steel strength is retained (tensile strength ≥300MPa), and it can be directly cut and installed without damaging the coating.
04
Environmental Adaptability
Stable use at -30℃~80℃, suitable for dry indoor and lightly corrosive environments.
Manufacturing process of pre-galvanized cable tray
Base material selection
Use high-quality cold-rolled steel plate or steel strip to ensure mechanical strength.
Pretreatment
Pickling to remove the surface oxide layer and improve the adhesion of the zinc layer.
Hot-dip galvanizing
Immerse the steel plate in molten zinc liquid (about 450°C) to form a uniform zinc layer (usually ≥65μm).
Forming
The galvanized steel plate is made into a bridge (trough type, ladder type, tray type, etc.) through stamping, bending, welding and other processes.
Accessories for pre-galvanized cable trays
When installing a pre-galvanized cable tray system, a complete system of accessories is required to ensure installation quality and performance. These accessories are mainly divided into connection, support, fastening and grounding, terminal plugging and other auxiliary accessories, each of which has its specific functions and application scenarios.
Connection accessories are key components to ensure the continuity of the cable tray system. Connecting pieces (connecting plates) are used for docking and fixing of bridge sections, usually with galvanized steel plates and bolts; variable width connecting pieces are used for transitional connections of bridges of different widths. Horizontal elbows and vertical elbows are used for turning in the horizontal and vertical directions, respectively, with common angles including 30°, 45° and 90°. Tee and four-way accessories realize branch connection of cable lines, while expansion joints are used to compensate for the expansion and contraction deformation of bridges caused by temperature changes to prevent structural damage.
Support accessories provide structural stability for the entire bridge system. The bracket arm (support arm) supports the bridge frame by fixing it on the wall or column. There are two types of single arm and double arm. The column is used as a vertical support and is usually height-adjustable to adapt to different installation environments. The hanger is used for ceiling suspension installation and needs to be used with expansion bolts; the cross arm is mainly used for ladder bridges to enhance the lateral load-bearing capacity; the bracket base is the ground fixing point of the support system.
Fasteners include bolts, nuts and washers of various specifications, all of which need to be galvanized to prevent rust. The grounding system is an important guarantee for safe operation. Copper braided belts or galvanized flat steel are usually used as grounding wires, and grounding clamps are used to achieve reliable electrical connections. Cable clamps are used to fix cables to prevent them from shifting or loosening.
The terminal head is used to close the end of the bridge frame to prevent the cable from being exposed and damaged; the wall sheath protects the insulation layer of the cable when it passes through the wall; and the fireproof plugging material is used to plug the hole through the wall of the bridge frame to meet fire protection requirements. These accessories not only provide physical protection, but also improve the safety level of the system.
Auxiliary accessories include identification plates, shockproof brackets and cable ladder crosspieces. Identification plates are used to mark the cable direction and information for later maintenance; shockproof brackets can reduce the impact of equipment vibration on the bridge; crosspieces are specifically used for ladder bridges to prevent cables from sagging.
When selecting accessories, special attention should be paid to key factors such as material matching, load-bearing capacity, fire protection requirements and grounding specifications. All accessories should be made of the same material as the main body of the bridge (pre-galvanized), the load-bearing capacity of the support should be determined according to the actual load, special fireproof accessories should be used in the fireproof area, and the grounding system must comply with relevant electrical safety standards. Reasonable selection of accessories and standardized installation and construction are important guarantees to ensure the long-term and stable operation of the pre-galvanized cable bridge system.
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