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Fujian Yintu Industrial Co., Ltd. designs and manufactures hot-dip galvanized steel coils to ensure critical infrastructure can withstand extreme environments, ensuring high-quality use. Hot-dip galvanized steel coils form a metallurgical bond between zinc and steel, which prevents them from rusting for decades. Furthermore, hot-dip galvanized steel coils also offer excellent heat resistance, withstanding high temperatures, allowing them to function even in hot regions like deserts.
Barrier Defense: A 75μm zinc coating coats the steel, shielding it from moisture and oxygen, thus resisting oxidation and forming a protective barrier.
Cathodic Protection: Zinc sacrificially corrodes at damaged edges before the steel itself, protecting it from corrosion.
Self-Healing Patina: Zinc carbonate forms a protective layer at scratches.
| Feature | Specification | Protective Advantage |
| Coating Weight | 275 g/m² (Z275) | 70+ years in C4 environments |
| Adhesion Strength | 5, 500 psi | Survives stamping/bending |
| Crystal Structure | Spangle-free surface | Optimal for painting/welding |
| Salt Spray Resistance | >5, 000 hours | Ideal for coastal projects |
1. Transmission Towers: The zinc alloy coating of hot-dip galvanized steel coils prevents cut corrosion and can last over 60 years without maintenance.
2. Solar Mounting Systems: Hot-dip galvanized steel coils withstand abrasive cleaning cycles, ensuring zero corrosion.
Galvanized Steel Coil Question and Answer
Q: Does hot-dip galvanized steel coil really eliminate maintenance costs?
A: Absolutely. I inspected a 41-year-old bridge girder, and our Z275 coating retained 89% of its thickness. In comparison, a painted structure would need recoating every 12-15 years, at a cost of up to 380 grams per kilometer.
Q: Will it withstand coastal salt spray environments?
A: Our hot-dip galvanized steel coils undergo 5,000 hours of salt spray testing (ASTM B117). The results show only 0.5% corrosion loss, compared to 18.7% for painted samples. Our coils have been used at a Fujian coastal wind farm since 2012 with zero failures.
Q: How important is zinc thickness control?
A: Vital! Our automated coating tanks achieve an accuracy of ±7 grams per square meter. A defect of just 20 grams per square meter can shorten the protection life by 40 years. Every coil is XRF-verified—we reject 0.3% of our products.
Ready to eliminate the costs of corrosion? Contact Fujian Yintu Industrial for custom galvanized steel coil solutions: Design structures that outlast their designers.
