The Sun hot-dip galvanized cable ladder is fully fabricated from steel and then immersed in molten zinc. The zinc covers surfaces, cut edges and welded areas, improving corrosion resistance for outdoor cable systems, industrial plants and harsh environments.
When should it be used hot-dip galvanized cable ladder?
This product line is selected when cable ladders are exposed to sun and rain, high humidity or corrosive agents stronger than ordinary indoor conditions. Common applications include outdoor cable routes, industrial plants, substations, energy systems, water-treatment areas, coastal projects and locations that are difficult to maintain.
- Advantages: the zinc layer is formed after fabrication, protecting surfaces, cut edges and welded areas.
- Service life: depends on coating thickness, environment, drainage design and maintenance.
- Design note: account for cable load, support spacing, wind conditions and the outdoor location of each route.
Common technical specifications
| Parameter | Production options |
|---|---|
| Width W | 100–1000 mm |
| Height H | 50–200 mm |
| Length L | 2.5 m or 3 m per length; manufactured to order |
| Steel thickness | From 1.2 mm; 1.2 mm is used only when W < 200 mm; commonly from 1.5 mm upward |
| Finish | Hot-dip galvanized after fabrication |
| Fittings | Horizontal bends, risers, drop-outs, tees, crosses, reducers, joints and supports |
Thickness-selection rule: Hot-dip galvanized cable ladders use steel at least 1.2 mm thick. The 1.2 mm specification applies only to ladders with W < 200 mm; most sizes and projects use at least 1.5 mm. Final thickness must be checked against cable load and support spacing.
The final specification is determined by the project documentation. For heavily loaded routes or wide support spans, The Sun advises on thickness, cross-member design and suitable jointing.
Production and galvanizing process
- Cut, punch, form and fully weld ladders and fittings.
- Check dimensions, drain holes and assembly details before galvanizing.
- Remove oil and rust and prepare surfaces according to the galvanizer’s process.
- Immerse products in molten zinc to form the protective coating.
- Cool the products, remove sharp points or excess zinc and check fit.
- Sort, pack and deliver by the project’s route code.
Because galvanizing follows mechanical fabrication, joint-hole dimensions and assembly tolerances must be planned in advance. Order fittings with the same batch to minimise surface differences.
How does hot-dip galvanizing differ from pre-galvanized steel?
| Criterion | Hot-dip galvanizing | GI pre-galvanized steel |
|---|---|---|
| Production sequence | Fully fabricated, then zinc-immersed | Fabricated from pre-galvanized steel sheet |
| Protected areas | Surfaces, cut edges and welds after fabrication | Sheet surface has zinc; cut edges and welds require treatment |
| Preferred environment | Outdoor, high humidity and corrosion | Indoor, dry and sheltered |
| Lead time | Additional galvanizing time required | Faster production and delivery |
Coordinated hot-dip galvanized fittings
The system comprises straight ladders, splice plates, horizontal and vertical bends, tees, crosses, reducers and supports. Outdoors, provide robust supports, prevent water accumulation and minimise site cutting. If post-galvanizing fabrication is unavoidable, affected areas must be reprotected according to the project requirements.
See cable ladder drawings and fittings to determine bend radius, branch dimensions and ordering codes.
Comparison of three common finishes
| Type | Suitable environment | Key advantage |
|---|---|---|
| Powder coating | Indoor, appearance-focused | Many colours and easy route identification |
| Pre-galvanized steel | Indoor, dry | Economical with quick delivery |
| Hot-dip galvanizing | Outdoor, corrosive environments | Post-fabrication protection and high durability |
Selection criteria hot-dip galvanized cable ladder
When selecting a hot-dip galvanized cable ladder, define cable load, support spacing, corrosivity and coating requirements. The hot-dip galvanized cable ladder specification must coordinate with fittings, splice plates and supports. Ordering hot-dip galvanized cable ladders to drawings reduces site cutting and better protects galvanized surfaces.
Hot-dip galvanized cable ladder quotation
Price depends on dimensions, steel thickness, product quantity, coating requirements, fitting quantity, acceptance standards and delivery location. For an accurate quotation, send drawings, the bill of quantities, W×H×T, length and installation environment.
Contact The Sun for advice and a quotation:
Order hot-dip galvanized cable ladders from The Sun
The Sun manufactures hot-dip galvanized cable ladders to project bills of quantities and drawings. Each batch of hot-dip galvanized cable ladders is checked against the specification before delivery; customers can order straight ladders and matching hot-dip galvanized cable-ladder fittings together.
ASTM A123/A123M for hot-dip galvanized cable ladder
The Sun commissions hot-dip galvanizing for cable ladders and fittings according to ASTM A123/A123M-24. This standard specifies hot-dip zinc-coating requirements for iron and steel products, including products fabricated, welded or assembled before galvanizing. Accepted coating thickness depends on material category and steel thickness under the standard tables; one value should not be applied to every ladder size.
Reference price list for hot-dip galvanized cable ladders
Reference prices per metre, excluding VAT. The prices below exclude cable-ladder covers; covers and fittings are quoted separately by specification. These reference factory prices may change with material costs, quantity, drawings, required steel thickness and ASTM A123 coating requirements at the time of order. Contact us to confirm pricing, transport and lead time.
| Dimensions (Width × Height × Thickness) | Product code | Price (VND/m) |
|---|---|---|
| 100x50x1.5 | TC-100x50x1.5-KN-LN1-KNN | 128,000 ₫ |
| 100x50x2 | TC-100x50x2-KN-LN1-KNN | 165,000 ₫ |
| 200x50x1.5 | TC-200x50x1.5-KN-LN1-KNN | 145,000 ₫ |
| 200x50x2 | TC-200x50x2-KN-LN1-KNN | 187,000 ₫ |
| 200x100x1.5 | TC-200x100x1.5-KN-LN1-KNN | 201,000 ₫ |
| 200x100x2 | TC-200x100x2-KN-LN1-KNN | 259,000 ₫ |
| 250x100x1.5 | TC-250x100x1.5-KN-LN1-KNN | 209,000 ₫ |
| 250x100x2 | TC-250x100x2-KN-LN1-KNN | 269,000 ₫ |
| 300x100x1.5 | TC-300x100x1.5-KN-LN1-KNN | 218,000 ₫ |
| 300x100x2 | TC-300x100x2-KN-LN1-KNN | 280,000 ₫ |
| 400x100x1.5 | TC-400x100x1.5-KN-LN1-KNN | 235,000 ₫ |
| 400x100x2 | TC-400x100x2-KN-LN1-KNN | 302,000 ₫ |
| 500x100x1.5 | TC-500x100x1.5-KN-LN1-KNN | 251,000 ₫ |
| 500x100x2 | TC-500x100x2-KN-LN1-KNN | 323,000 ₫ |
| 600x100x1.5 | TC-600x100x1.5-KN-LN1-KNN | 268,000 ₫ |
| 600x100x2 | TC-600x100x2-KN-LN1-KNN | 345,000 ₫ |
| 800x100x2 | TC-800x100x2-KN-LN1-KNN | 388,000 ₫ |
| 1000x100x2 | TC-1000x100x2-KN-LN1-KNN | 431,000 ₫ |
Note: the table lists common sizes only. The Sun manufactures other dimensions and thicknesses according to the technical documentation.
Frequently asked questions
Is hot-dip galvanizing suitable for outdoor use?
Yes. It is preferred for many outdoor cable routes and corrosive environments. Actual service life still depends on project conditions and design and installation quality.
Are products galvanized after welding?
Yes. Ladders and fittings are fully fabricated first and then hot-dip galvanized.
Should fittings be ordered in the same material?
Order straight ladders, fittings and splice plates with the same finish specification to ensure protection and assembly compatibility.