Key Takeaways
- 50-100 μm Coating Thickness: Hot-dip galvanizing provides robust zinc coating.
- 20-50 Year Lifespan: Varies by environment (rural to coastal).
- Self-Healing at Scratches: Zinc provides cathodic protection at damaged areas.
- No Maintenance Required: Unlike paint systems, galvanizing doesn't need periodic renewal.
- In-House Galvanizing Facility: Manxing operates 18m × 2.5m × 2.0m galvanizing bath.
Table of Contents
The Galvanizing Advantage
A grain storage project in Argentina chose galvanized silos over painted. After 15 years, the galvanized silos show zero corrosion while the painted silos have been repainted twice. The initial 20% cost premium for galvanizing has been recovered in avoided maintenance costs.
Hot-Dip Galvanizing Process
Steel immersed in molten zinc at 450°C. Process: degreasing, pickling, fluxing, galvanizing, cooling. Coating thickness: 50-100 μm depending on steel thickness.
Corrosion Lifespan
Rural: 50-100+ years. Suburban: 40-60 years. Industrial: 30-50 years. Coastal: 20-30 years. Tropical: 25-40 years.
Design Considerations
Venting and drainage holes for enclosed sections. Avoid tight crevices. Steel composition affects coating thickness. All welding must be completed before galvanizing.
Frequently Asked Questions
Q: Can galvanized silos be used for food storage?
A: Yes, galvanized steel is approved for food storage. The zinc coating is non-toxic and provides excellent corrosion protection.
Considering galvanized silos? Manxing operates in-house galvanizing and can deliver pre-galvanized silos. Request Galvanized Silo Quote