Powder-coated cable trunking is formed from sheet steel and finished with an electrostatically applied powder coating. It is commonly used to contain, protect, and organize electrical cable routes in buildings and industrial facilities. Compared with unfinished trunking, the coating provides a uniform color, improves protection of the steel surface, and meets higher aesthetic requirements.
At The Sun, powder-coated cable trunking is manufactured in the dimensions, thicknesses, and colors required for each project. It is widely used in factories, buildings, shopping centers, offices, and industrial electrical systems where cables must be neatly routed and easy to inspect and maintain.
The Sun is a direct cable trunking manufacturer and provides custom fabrication to project specifications and drawings.
1. What Is Powder-Coated Cable Trunking?
Powder-coated cable trunking is a type of enclosed cable trunking with a box-shaped body, normally supplied with a cover. It is fabricated from sheet steel, surface-treated, and powder-coated in the specified color.
Its basic construction includes:
- Trunking body: contains and protects the cable route.
- Cover: closes the top and limits dust ingress and external mechanical impact.
- Joint: connects trunking sections into a continuous route.
- Fittings: horizontal elbows, risers, droppers, tees, crosses, and other directional components.
- Powder coating: provides the finished steel surface and allows a wide choice of colors.
This solution is suitable when a project requires a wiring system that is neat, color-coordinated, and able to protect cables effectively in an appropriate service environment.
2. Why Use Powder-Coated Cable Trunking?
Cable trunking does more than contain electrical wires; it organizes an entire cable route into a clearly structured system.
Cable protection and organization
The trunking body and cover keep cables together, reducing loose routing and exposure to surrounding environmental effects.
On routes carrying many cables, trunking makes inspection, additions, and replacement easier than wiring without a dedicated support and protection system.
Improved project aesthetics
A visible advantage of powder-coated trunking is its uniform color and consistent surface finish.
The coating color can follow design requirements or system-identification conventions. This is why coated trunking is widely used in technical areas of buildings, factories, and commercial facilities.
A protective surface coating
The powder coating forms a protective layer over the steel, helping shield the substrate from normal conditions in the intended service environment.
Actual corrosion resistance, however, depends on the substrate, surface-preparation process, coating quality, and installation environment. Powder-coated steel should therefore not be treated as a universal replacement for hot-dip galvanized steel in outdoor or highly corrosive environments.
3. Which Projects Is Powder-Coated Cable Trunking Suitable For?
Coated steel trunking is generally suited to projects where cable routes are installed in relatively stable conditions, particularly indoors.
Workshops and factories
Trunking organizes power and control cables, together with electrical systems serving machinery and equipment.
Buildings and shopping centers
A trunking system consolidates cable routes in service floors, ceiling voids, and areas where numerous circuits must be managed.
Offices and commercial facilities
The finished surface and range of color options help the system satisfy a project’s aesthetic requirements.
Indoor electrical systems
Where cable routes are not regularly exposed to water, salt-laden air, or aggressive chemicals, powder-coated cable trunking is a popular choice in terms of cost and finish.
4. Powder-Coating Colors for Cable Trunking
A key feature of powder-coated cable trunking is the ability to specify the required color.
The Sun can manufacture trunking in commonly requested colors including:
- RAL 7032
- RAL 7035
- RAL 9001
- RAL 6018
- RAL 5005
- RAL 3020
- RAL 2004
- RAL 7000
- RAL 9017
The final color may be selected to meet project requirements, system-identification conventions, or the architectural design.
Should multiple colors be used?
Not necessarily.
Color selection should follow the requirements of each project. Where no special convention applies, one consistent color can be used throughout the system.
If a project assigns a distinct color to each electrical system or area, The Sun can manufacture to those specified colors.
5. Powder-Coated Cable Trunking Specifications
There is no single trunking size suitable for every project. Dimensions should be selected according to cable quantity and size, future capacity, and route loading.
| Parameter | Manufacturing specification |
|---|---|
| Product name | Powder-coated cable trunking |
| Product type | Enclosed trunking, optional cover |
| Substrate | Sheet steel |
| Finish | Powder coating |
| Standard length | 2.5 m/section |
| Width (W) | To design requirements |
| Height (H) | To design requirements |
| Thickness (T) | 0.8 – 1.0 – 1.2 – 1.5 – 2.0 – 2.5 mm |
| Color | To color chart or project requirements |
| Cover | With / without, depending on design |
| Fabrication | To specification or drawing |
| Fittings | Elbows, tees, crosses, joints, and directional components |
Common cable trunking sizes
Frequently used sizes include:
- 100 × 50 mm
- 200 × 50 mm
- 100 × 100 mm
- 200 × 100 mm
- 300 × 100 mm
- 400 × 100 mm
In addition to these common dimensions, The Sun manufactures to project-specific requirements.
6. How to Select Powder-Coated Cable Trunking Thickness
Thickness should not be selected from trunking dimensions alone.
When determining thickness, consider all of the following:
- Trunking width and height.
- Total cable weight.
- Spacing between supports.
- Support type.
- Horizontal or vertical route orientation.
- Allowance for future cable additions.
- Transport and installation conditions.
For example, a 100 mm-wide section carrying a light cable load has different requirements from a 400 mm-wide section carrying numerous power cables.
For large or heavily loaded routes, thickness should therefore be determined together with support spacing and design load, not selected by habit.
7. How Does Powder-Coated Cable Trunking Compare with Other Types?
No single material is ideal for every project. Selection should be based on the service environment and technical requirements.
See also: cable trunking, hot-dip galvanized cable trunking, and 304 stainless steel cable trunking to select a material for the intended environment.
| Trunking type | Key advantages | Typical suitable environment |
| Powder-coated steel | Attractive finish, multiple colors, reasonable cost | Indoor areas, factories, buildings |
| Pre-galvanized steel | Low cost and easy fabrication | Suitable indoor environments |
| Hot-dip galvanized steel | Good corrosion resistance | Outdoors and harsh environments |
| Stainless steel 304/316 | High corrosion resistance and easy cleaning | Food, chemical, and high-demand environments |
| Aluminum | Lightweight with good corrosion resistance | Projects requiring reduced weight |
For an overview of trunking types and material selection, see The Sun’s Cable Trunking page.
8. Powder-Coated Cable Trunking Manufacturing Process at The Sun
As a direct manufacturer, The Sun controls the fabrication and finishing stages at its factory.
The basic process is:
Blank cutting → Punching/cutting to specification → Press-brake forming → Surface preparation → Powder coating → Inspection → Packing
Press-brake forming directly determines the shape and dimensional accuracy of the trunking body.
After fabrication, each product undergoes surface preparation before coating. The finished layer is then inspected for appearance and uniformity before packing.
9. Quality Inspection Before Delivery
For powder-coated cable trunking, visual inspection is an important step before dispatch.
Inspection items may include:
- Width, height, and length.
- Material thickness against the order requirements.
- Shape and accuracy of the trunking body.
- Condition of the coated surface.
- Color and uniformity.
- Hole positions, joint tabs, and fabricated details against the drawing.
- Product quantity and specifications before packing.
For project orders, inspection can follow the agreed technical documentation and acceptance criteria.
10. Packing and Delivery
After inspection, the trunking is bundled in packs suited to the product dimensions and transport method.
Protecting the finish during transportation is especially important to reduce scratches caused by contact between products.
11. Powder-Coated Cable Trunking Pricing
The price depends on several factors, most importantly:
- W × H dimensions.
- Material thickness.
- Whether a cover is required.
- Coating color.
- Fitting specifications.
- Order quantity.
- Custom fabrication requirements shown on drawings.
- Order date and raw-material price fluctuations.
Products with the same dimensions but different thicknesses or fabrication requirements can therefore have different unit prices.
Request a direct factory quotation from The Sun
Customers can send their specifications, bill of quantities, or M&E drawings so The Sun can determine the correct configuration and quote accurately.
Send your drawings or bill of quantities for a project-specific powder-coated cable trunking quotation.
12. Custom Powder-Coated Cable Trunking Manufacturing by The Sun
The Sun specializes in manufacturing cable ladder and trunking systems and mechanical products for electrical installations.
For powder-coated cable trunking, customers can specify:
- W × H dimensions.
- Material thickness.
- Length.
- Coating color.
- With or without a cover.
- Quantity.
- Detailed drawings or bill of quantities.
From this information, the factory can determine a suitable manufacturing specification and supply plan.
Reference Price List for Powder-Coated Cable Trunking
Reference unit prices per meter, excluding VAT. The table below shows prices for uncovered trunking bodies and complete sets with covers. These are reference prices at The Sun’s factory and may change with material prices, quantities, drawings, coating-color requirements, and coating thickness at the time of order. Please contact us to confirm the quotation, shipping cost, and lead time.
| Specification (Width × Height × Thickness) | Price without cover (VND/m) | Price with cover (VND/m) |
|---|---|---|
| 60x40x0.8 | 43,000 | 65,000 |
| 60x40x1.0 | 49,000 | 75,000 |
| 60x40x1.2 | 54,000 | 83,000 |
| 60x40x1.5 | 63,000 | 96,000 |
| 50x50x0.8 | 45,000 | 65,000 |
| 50x50x1.0 | 52,000 | 75,000 |
| 50x50x1.2 | 58,000 | 83,000 |
| 50x50x1.5 | 67,000 | 97,000 |
| 100x50x0.8 | 59,000 | 92,000 |
| 100x50x1.0 | 67,000 | 104,000 |
| 100x50x1.2 | 75,000 | 117,000 |
| 100x50x1.5 | 87,000 | 136,000 |
| 100x50x2.0 | 106,000 | 166,000 |
| 200x50x0.8 | 85,000 | 144,000 |
| 200x50x1.0 | 97,000 | 164,000 |
| 200x50x1.2 | 108,000 | 183,000 |
| 200x50x1.5 | 125,000 | 212,000 |
| 200x50x2.0 | 154,000 | 261,000 |
| 100x100x0.8 | 85,000 | 118,000 |
| 100x100x1.0 | 97,000 | 134,000 |
| 100x100x1.2 | 108,000 | 150,000 |
| 100x100x1.5 | 125,000 | 174,000 |
| 100x100x2.0 | 154,000 | 214,000 |
| 200x100x1.0 | 127,000 | 194,000 |
| 200x100x1.2 | 142,000 | 217,000 |
| 200x100x1.5 | 164,000 | 251,000 |
| 200x100x2.0 | 202,000 | 309,000 |
| 300x100x1.0 | 157,000 | 253,000 |
| 300x100x1.2 | 175,000 | 283,000 |
| 300x100x1.5 | 203,000 | 328,000 |
| 300x100x2.0 | 250,000 | 405,000 |
| 400x100x1.2 | 209,000 | 350,000 |
| 400x100x1.5 | 242,000 | 406,000 |
| 400x100x2.0 | 298,000 | 500,000 |
Note: the table lists common specifications only. The Sun also manufactures other dimensions and thicknesses to technical documentation.
13. Frequently Asked Questions About Powder-Coated Cable Trunking
Where is powder-coated cable trunking used?
It is commonly used in factories, buildings, shopping centers, offices, and indoor technical areas.
What colors are available?
Many colors can be selected from the coating chart. RAL 7032, RAL 7035, RAL 9001, RAL 7000, and RAL 9017 are among the options available according to project requirements.
Is powder-coated cable trunking rust-resistant?
The coating protects the steel surface, but corrosion resistance depends on the material system and environmental conditions. For outdoor or highly corrosive environments, more suitable materials such as hot-dip galvanized steel, stainless steel, or another protective finish should be considered.
Can cable trunking be made to drawings?
Yes. The Sun is a direct manufacturer and can fabricate trunking to the dimensions, thickness, and technical requirements of each project.
Is it available with a cover?
Yes. It can be manufactured with or without a cover, depending on the system design.
Should I choose powder coating or hot-dip galvanizing?
Powder coating is suitable when the route is mainly indoors and color, appearance, and cost are priorities. For outdoor, wet, or highly corrosive environments, hot-dip galvanizing or another corrosion-resistant material should be considered.
14. Contact The Sun – Cable Trunking Manufacturer
If you need powder-coated cable trunking manufactured to project specifications, send The Sun the required dimensions, thickness, quantity, or drawings.
The Sun can supply standard specifications or fabricate products to project requirements.
THE SUN JOINT STOCK COMPANY
- Website: thesun.vn
- Hotline/Zalo: 0903 988 018
- Email: info@thesun.vn
- Products: cable trunking, cable trays, cable ladders, wire-mesh trays, and fittings.