Regular Spangle SGCC Standard Galvanzied Steel Sheet Coil

Advantages of Galvanized Coils

1.Processing performance: The galvanized coating does not affect the cold bending, stamping and welding performance of the base material, but the die gap (coating thickness +0.02mm) needs to be controlled to avoid zinc coating peeling. The galvanizing process slightly increases the yield strength (about 5-10 mpa) without affecting the low-temperature toughness.

2.Excellent surface quality: The surface of the galvanized coil is smooth and flat, effectively reducing wind resistance and noise, lowering dust accumulation, and facilitating cleaning and maintenance. For example, when applied to ventilation ducts, it can ensure the efficiency of air circulation and extend the maintenance cycle.

3.Long service life: In industrial environments, the corrosion resistance period can reach 10 to 20 years, and in Marine environments, it still remains for 5 to 10 years. Compared with ordinary steel coils, the full life cycle cost is reduced by 30-50%.

4.Strong corrosion resistance: The galvanized layer forms a protective film of zinc oxide/zinc hydroxide through the principle of preferred corrosion by sacrificial anodes, demonstrating remarkable resistance to salt spray corrosion. For instance, when the thickness of the hot-dip galvanized coating is ≥45μm, the corrosion rate under salt spray test is ≤1μm/ year, and the service life is 5 to 10 times longer than that of ordinary steel coils.