Galvanised cable trunking, also known as Electro-Galvanised Cable Trunking, is a durable, versatile, and cost-effective cable tray system suitable for various cable support and management applications. Electro-galvanised, also called electrolytic galvanizing, is a process for coating steel or other metals with a thin layer of zinc to provide corrosion resistance. Electro-galvanising is a electrochemical process that deposits a thin, uniform layer of zinc on metal surfaces to provide corrosion protection, and is often used for smaller, more intricate metal parts and components.

As the reliable cable tray manufacturer and supplier, JLH Electric offers high quality cable trunking in custom size and thickness at competitive factory price. In this blog, let delve into the definition, benefits and application of galvanized cable trunking, we think it will be helpful when you choose the right cable trunking for your specific projects.

1. What Is A Galvanised Cable Trunking ?

A galvanised cable trunking, also known as a galvanized cable duct or wire way, is a type of enclosed cable management system used to route and protect electrical cables, wires, and other electrical components.The trunking is made of galvanized steel, which provides excellent corrosion resistance and durability.The galvanization process involves coating the steel with a layer of zinc, protecting it from rust and environmental elements.

Galvanised cable trunking has an enclosed, channel-like structure that completely encases the cables, providing physical protection and separation.This design helps prevent damage to the cables, protects them from environmental factors, and maintains the organized routing of the electrical system.Galvanized cable trunking is suitable for a wide range of applications, including industrial facilities, commercial buildings, data centers, and other environments where organized and protected cable management is required.It can accommodate various types of cables, such as power cables, communication cables, and control cables.

The galvanised steel construction of the trunking provides good mechanical strength, allowing it to support the weight of the cables and withstand physical impacts or stresses.Galvanized cable trunking has a clean, industrial look that can complement the overall aesthetic of the installation environment.Galvanized cable trunking is a popular choice for cable management in industrial, commercial, and infrastructure applications due to its durability, corrosion resistance, and ability to protect and organize electrical cables and wires.


Galvanized Cable Trunking
Pre-galvanized Cable Trunking

1. What Are Benefits of Galvanised Cable Trunking?

Galvanised Cable Trunking offer corrosion resistance, durability, strength, versatility, environmental friendliness, and easy installation. These benefits make them an ideal choice for organizations seeking long-lasting, cost-effective, and reliable solutions for their cable support and management needs.

1.1 Corrosion Resistance

The galvanised steel construction provides excellent protection against corrosion, ensuring the trunking system has a long service life, even in challenging environmental conditions.

The zinc coating on the steel acts as a sacrificial anode, preventing the underlying steel from rusting.

2.2 Durability

Galvanised cable trunking is highly durable and resistant to mechanical damage, making it suitable for use in industrial and commercial settings where the cable management system may be subjected to physical impacts or loads.

2.3 Electrical Safety

The enclosed design of the trunking helps protect the cables from physical damage, reducing the risk of electrical faults or hazards.

It also helps prevent interference with the cables, ensuring the integrity of the electrical system.

2.4 Fire Safety

Galvanised steel is non-combustible, providing an added layer of fire safety for the electrical cables routed within the trunking.

2.5 Ease of Installation

Galvanised cable trunking systems are designed for straightforward installation, with a variety of accessories and fittings available to facilitate the routing and support of cables.

2.6 Versatility

Galvanised cable trunking can accommodate a wide range of cable types, including power, communication, and control cables, making it suitable for diverse electrical infrastructure applications.

2.7 Aesthetics

The clean, industrial appearance of galvanized cable trunking can complement the overall design of the installation environment, especially in industrial or commercial settings.

2.8 Cost-effectiveness

Compared to alternative cable management solutions, galvanised cable trunking can be a cost-effective option, particularly for large-scale installations.

3. What Is Difference Between Galvanised And HDG Cable Trunking?

The differences between Galvanised and HDG cable ladder can be attributed to factors such as coating thickness, corrosion resistance, surface properties, mechanical strength, and cost. HDG cable trunking offers better corrosion protection and mechanical strength, making it the preferred choice for industrial, outdoor, or highly corrosive applications, while galvanised trunking is more economical for less demanding environments.


3.1 Galvanization Process

Pre-galvanised cable trunking is made from steel that has been coated with a thin layer of zinc through an electrolytic or electroplating process.

HDG cable trunking is made from steel that has been dipped in a molten zinc bath, resulting in a thicker and more durable zinc coating.

3.2 Coating Thickness

Pre-galvanised coatings are typically 5-25 microns thick.

HDG coatings are generally thicker, ranging from 50-100 microns or more.

3.3 Corrosion Resistance

HDG cable trunking offers superior corrosion resistance compared to galvanised trunking due to the thicker zinc coating.

The HDG process provides better protection against damage to the zinc coating, ensuring longer-lasting corrosion resistance.

3.4 Appearance

Galvanised trunking has a smoother, more uniform appearance due to the electroplating process.

HDG trunking has a more textured, mottled appearance due to the nature of the hot-dip galvanization process.

3.5 Mechanical Strength

HDG cable trunking is generally considered to have slightly higher mechanical strength than galvanised trunking due to the thicker zinc coating and the overall manufacturing process.

3.6 Galvanised cable trunking Cost

Galvanised cable trunking is typically more cost-effective than HDG trunking, as the electroplating process is generally less expensive than the hot-dip galvanization.

3.7 Cable trunking Applications

Galvanised cable trunking is often used in less demanding environments, such as indoor or low-humidity applications.HDG cable trunking is more suitable for harsh, outdoor, or high-corrosion environments due to its superior corrosion resistance.

Galvanised Cable Trunking
Cable Trunking

4.What Is Galvanised Cable Trunking Used for?

4.1 Industrial Facilities

Factories, manufacturing plants, warehouses, and other industrial settings use galvanised cable trunking to route and protect power cables, control cables, and communication cables.

The corrosion resistance and durability of the galvanised steel are well-suited for the harsh environments often found in industrial facilities.

4.2 Commercial Buildings

Office buildings, retail spaces, schools, hospitals, and other commercial structures use galvanised cable trunking to manage and protect electrical and data cables.

The enclosed design helps maintain a neat and organized appearance while providing physical protection for the cables.

4.3 Data Centers and IT Infrastructure

Galvanised cable trunking is commonly used in data centers, server rooms, and other IT-intensive facilities to route and protect a variety of communication and power cables.

The trunking helps maintain cable organization and prevents interference between different cable types.

4.4 Infrastructure Projects

Galvanised cable trunking is used in infrastructure projects such as transportation (e.g., airports, railways, highways), utility installations, and public facilities.The corrosion resistance of the galvanized steel is crucial for outdoor or exposed applications.

4.5 Electrical Installations

Galvanised cable trunking is used in various electrical installations, including power distribution systems, control systems, and building automation systems.

The trunking provides a safe and organized way to route and protect the electrical cables.

4.6 Renewable Energy Systems

Galvanised cable trunking is often used in renewable energy installations, such as solar power plants and wind farms, to manage and protect the electrical cables.

The corrosion resistance is particularly important in these outdoor, exposed environments.


Galvanised Cable Trunking offer corrosion resistance, durability, strength, versatility, and easy installation. They are ideal for organizations seeking long-lasting and reliable cable support and management solutions. The enclosed design helps protect cables from physical damage, reducing electrical hazards, while the non-combustible steel provides fire safety.

JLH Electric mainly manufacture all kinds of cable tray, cable ladder, cable trunking,for example, galvanized, hot dip galvanised, aluminum alloy, stainless steel, etc. Size can be customized. Free samples can be provided if request.OEM & ODM are available.