Surface treatment options
Choose the surface treatment that matches your environment and project budget.
The right coating extends system lifespan, reduces maintenance, and for some markets is a compliance requirement.
Use this guide to decide before requesting a quote.
Hot-Dip Galvanized (HDG)
Zinc layer: ≥ 42 µm — meets Australian AS 4687 standard
Best for: Outdoor sites, coastal environments, high-humidity areas, long-term projects
Expected lifespan: 15–25 years maintenance-free in most environments
The standard choice for export to Australia, New Zealand, and UK markets where the AS 4687 zinc coating requirement applies.
Pre-Galvanized + Powder Coat (Duplex)
Base: Zinc-coated steel + additional electrostatic powder top coat
Best for: Projects needing colour, branding, or maximum corrosion resistance in one system
Expected lifespan: 15–20 years — longer than powder coat alone because the zinc base resists chip damage
Available colours: silver, green, blue, white — or custom RAL matching on request.
Powder Coated Only
Finish: Electrostatic polyester powder coat over mill steel
Best for: Events, short-term projects, branded site hoardings, decorative perimeter
Expected lifespan: 10–15 years in normal environments. Not recommended for coastal or high-humidity without duplex upgrade.
Lower upfront cost. Good for projects where the fence will not be reused in harsh environments.
Cold Galvanized (Zinc-Rich Primer)
Coating: Zinc-rich primer applied cold — ~20–30 µm
Best for: Indoor storage, short-term indoor projects, or as a base layer before top-coat
Expected lifespan: 5–10 years maintenance-free indoors
Not suitable for outdoor or wet environments without a full hot-dip or duplex upgrade.
Unsure which finish fits your project?
Send us the destination market, project duration, and environmental conditions — we will recommend the right treatment
and confirm whether it meets the local standard for your country.