In modern architecture, power, communication, rail transit, industrial manufacturing and other fields, cable trays have become an indispensable part of the power distribution system as an important carrier for cable laying and protection. With the continuous expansion of market demand, various cable tray manufacturers have emerged one after another, providing a rich and diverse range of tray products to meet the usage requirements of different projects, environments, and industries.
This article will provide an in-depth introduction to the main types of cable trays, structural characteristics, applicable scenarios, and related technical parameters usually provided by cable tray manufacturers, helping purchasers, engineering designers, and construction units understand and choose suitable products.
1、 Basic definition of cable tray
Cable tray is a prefabricated structural system used to support and protect cables, typically installed on the floor, walls, or roof of buildings. The function of cable trays is not only to fix cables, but also to provide mechanical protection, heat dissipation, corrosion prevention, and standardized management for cables.
2、 Common types of cable trays produced by cable tray manufacturers
Although there are slight differences in the detailed design of cable tray products provided by different manufacturers, they can be basically classified into the following main types:
1. Trough type cable tray
Structural features:
The trough bridge is a closed structure with a shape similar to a "U-shaped trough" or "box". There is a cover plate above, which can provide good dust, water, and anti-interference effects.
Applicable scenarios:
Communication cable system
Computer Network System
High demand electromagnetic shielding locations
Outdoor or high humidity, high corrosiveness environment
Advantage:
good sealing performance
Strong protective performance
Outstanding anti-interference ability
2. Tray type cable tray
Structural features:
The tray type bridge adopts a shallow groove structure, with a metal tray at the bottom and an open or partially covered upper part.
Applicable scenarios:
Laying of power cables
Large industrial plant
Integrated pipeline layer
Advantage:
Good heat dissipation
Easy installation and maintenance
strong bearing capacity
What types of cable tray products do cable tray manufacturers generally provide?
3. Cascade cable tray
Structural features:
The two sides of the stepped bridge are vertical, and the middle is connected by a horizontal bar, resembling a ladder structure. The spacing between horizontal bars can be designed according to the diameter of the cable.
Applicable scenarios:
Large section power cable system
High temperature environment (such as metallurgy and chemical industry)
Long distance transmission lines
Advantage:
Good heat dissipation and ventilation performance
Light weight
Easy to install and maintain
4. Grid format cable tray (wire mesh tray)
Structural features:
Made of high-strength steel wire welded together, the overall shape is grid like, with flexible installation and the ability to bend and branch.
Applicable scenarios:
data application
Automated Workshop
Clean environment (such as hospitals, food factories)
Advantage:
Beautiful appearance and strong sense of modernity
Good ventilation and heat dissipation effect
Lightweight and easy to modify on-site
5. Combination cable tray
Structural features:
Composed of multiple standardized modules, it can be flexibly assembled according to project needs to achieve various forms of bridge structures.
Applicable scenarios:
Large scale integrated complex project
Government engineering or customized projects
Complex spatial installation environment
Advantage:
Strong flexibility
High degree of modularity
Easy to disassemble and reassemble
3、 Material selection of cable tray
Cable tray manufacturers usually provide the following materials according to different usage environments:
Material type characteristics Application environment
Cold rolled steel plate has low cost and high strength, and is suitable for indoor environments
Hot dip galvanized steel sheet has strong anti-corrosion ability in outdoor or humid environments
Stainless steel has high corrosion resistance and good appearance in the chemical, food, and pharmaceutical industries
Aluminum alloy is lightweight and has good heat dissipation. It has weight limitations or requires high heat dissipation areas
Fiberglass reinforced plastic (FRP) has good corrosion resistance and insulation performance in coastal and highly corrosive areas
4、 Common accessories provided by cable tray manufacturers
Legitimate manufacturers not only provide standard bridge body, but also equip various accessories for installation needs such as connection, steering, and support, including but not limited to:
Bend (horizontal/vertical inner and outer bends)
Three way, four way
Variable diameter section
Connecting piece, screw package
Hanger, bracket, support arm
Partition, cover plate, sealing strip
The quality and type of these accessories directly affect the installation effect and system stability, and the selection should be compatible with the main bridge model.
5、 Customization capability of cable tray manufacturers
Most professional cable tray manufacturers have certain non-standard customization capabilities and can customize according to the drawings or technical parameters provided by customers as follows:
Dimensions: height, width, thickness, etc
Bend angle and special shape
Surface treatment: spray coating, hot-dip galvanizing, electroplating galvanizing, etc
Color selection (used to distinguish systems)
Customized products usually require a certain minimum order quantity and delivery time. It is recommended to communicate clearly with the manufacturer in the early stages of the project.
6、 Suggestions for selecting cable trays
In the procurement or design phase, it is recommended to consider the following factors comprehensively:
Types and quantities of cables: determine the size and load-bearing structure of the cable tray
Usage environment: Determine the material and anti-corrosion method of the bridge frame
Installation path complexity: determines whether to choose combination or grid format cable trays
Aesthetic and management requirements: For example, stainless steel or aluminum alloy materials should be given priority in cleanrooms
Budget and project timeline: Standardized products have lower costs and faster delivery, while customized products require advance planning