High-quality GI galvanized steel cable ladder is made from steel sheet that is galvanized before fabrication, then cut, punched and roll-formed into side rails and rungs. The zinc coating is applied at the mill, giving a smooth, consistent, cost-effective finish that suits indoor cable routing in offices, commercial buildings and light industrial areas.
Material and Coating
- GI steel cable ladder uses pre-galvanized sheet, typically 1.2-2.0 mm thick for standard widths, with the zinc layer applied before cutting and forming.
- Because the coating goes on before fabrication, cut edges and punched holes are not re-coated, so GI ladder is best suited to dry, low-corrosion indoor environments.
- The pre-galvanized process uses less zinc than hot-dip galvanizing after fabrication, which keeps material and production costs lower.
- Fittings such as bends, tees, crosses and reducers are available in matching GI finish.
- Zinc coating weight is typically lighter than hot-dip galvanizing, so GI cable ladder should be inspected periodically and kept away from standing water or direct weather exposure to get the longest service life.
Standard Sizes and Load Capacity
- Width: 100-800 mm
- Height (side rail): 50-125 mm
- Rung spacing: 225 mm or 300 mm centers, per NEMA VE1
- Standard length: 2.5 m or 3 m per section
- Load class: light and medium duty, sized to span and support distance
Applications
High-quality GI galvanized steel cable ladder is widely used in office buildings, commercial complexes, schools, hospitals and light industrial workshops where cables run indoors in a dry, low-corrosion environment. It is a cost-effective choice for retrofits and new installations where hot-dip galvanizing’s extra corrosion protection is not required. Because the zinc layer is applied at the mill rather than after fabrication, GI galvanized steel cable ladder typically costs less than hot-dip galvanized cable ladder of the same size, making it an economical choice for indoor projects with tight budgets. The Sun can also supply matching GI fittings, covers and accessories so the whole cable management run shares the same finish and corrosion class.
Frequently Asked Questions
How is GI (pre-galvanized) different from hot-dip galvanized cable ladder?
GI cable ladder is cut and formed from steel sheet that was already galvanized at the mill, so cut edges and holes are not re-coated with zinc; this gives a smoother, lower-cost finish suited to indoor use. Hot-dip galvanized cable ladder is dipped in molten zinc after fabrication, so every weld, cut edge and hole is fully coated for stronger, longer-lasting protection outdoors.
Do you supply drawings and load calculations?
Yes. The Sun’s engineering team can provide fabrication drawings, load tables and, where required, third-party test reports referenced against NEMA VE1 and IEC 61537 to support your project approval.
How long does GI galvanized coating last indoors?
In dry indoor environments such as offices, data centers and commercial buildings, GI galvanized steel cable ladder typically provides many years of reliable corrosion resistance, since it is not exposed to the rain, humidity or chemical fumes that shorten coating life outdoors. For sites with any moisture, salt air or chemical exposure, The Sun recommends hot-dip galvanized cable ladder instead, since its thicker, post-fabrication coating is better suited to harsher conditions.
Request a Quote
Pricing depends on width, height, thickness, length, fittings and quantity. See our full cable tray price list for reference ranges, or contact The Sun directly for an exact quote and delivery schedule. Standard sizes usually ship within a few days of order confirmation, while custom widths, lengths or finishes may need a short lead time for fabrication; The Sun’s sales team will confirm exact availability and delivery dates when you request a quote.
Hotline: 0903 988 018 · Email: info@thesun.vn