Views: 0 Author: Site Editor Publish Time: 2026-02-28 Origin: Site
High structural strength and strong wind & snow load capacity
Low upfront cost, ideal for large-scale ground solar power plants
Mature production technology and stable supply chain
Good compatibility with standard processing and installation
Average corrosion resistance in coastal, high-humidity, or industrial areas
Cutting edges and welding points are prone to rust without post-treatment
Requires regular maintenance in harsh environments
Typical service life: 20–25 years in normal environments
Large ground PV plants, inland low-corrosion areas, projects with tight budgets, high-load and long-span installations.
Self-healing performance: automatically repairs scratches and cut edges
Corrosion resistance 5–10 times higher than standard hot-dip galvanized steel
Excellent salt spray resistance, perfect for coastal and high-humidity areas
Longer service life: up to 30–35 years
Lighter coating with equal or better mechanical strength
Lower maintenance cost over the life cycle
Slightly higher material cost than standard hot-dip galvanized
Special processing may be required for welding
Coastal solar projects, salt-spray and high-humidity environments, long-life PV systems, commercial and industrial rooftop installations, and maintenance-free projects.
Lightweight (about 1/3 the weight of steel), reducing roof loading pressure
Natural oxide film provides excellent corrosion resistance
Maintenance-free for 25–30 years
Attractive appearance, suitable for visible rooftop installations
Easy to process and install, lowering labor and transportation costs
Lower strength than steel; requires profile reinforcement for high loads
Higher upfront material cost (1.3–1.5 times that of steel brackets)
Not ideal for extra-long-span or heavy-load ground systems
Residential and commercial rooftops, weight-limited buildings, coastal and corrosive environments, distributed solar systems, and aesthetic-sensitive projects.
| Item | Hot-Dip Galvanized | Zinc-Aluminum-Magnesium (ZAM) | Aluminum Alloy |
|---|---|---|---|
| Corrosion Resistance | Medium | Excellent (5–10× galvanized) | High |
| Service Life | 20–25 years | 30–35 years | 25–30 years |
| Strength | High | High | Medium |
| Weight | Heavy | Medium | Light |
| Cost | Lowest | Medium | Higher |
| Maintenance | Regular needed | Low maintenance | Maintenance-free |
| Typical Application | Ground plants, inland areas | Coastal, harsh environments | Rooftops, weight-sensitive sites |
Choose hot-dip galvanized if you prioritize cost, build large ground plants in inland areas, or need high strength at a low budget.
Choose zinc-aluminum-magnesium (ZAM) if you need superior corrosion resistance, long service life, and low maintenance for coastal or harsh environments.
Choose aluminum alloy if you install on rooftops with weight limits, want a maintenance-free system, or prefer an attractive, lightweight solution.
