To combat corrosion, GB angle steel can undergo:
Hot-Dip Galvanizing: Immersion in molten zinc forms a 80–120 μm thick layer, providing sacrificial protection. This is ideal for outdoor use, such as coastal bridges, with a lifespan of 50+ years.
Epoxy Painting: A two-coat system (zinc-rich primer + epoxy topcoat) resists chemicals and UV rays, used in industrial environments (e.g., chemical plants).
Powder Coating: Electrostatically applied powder forms a durable, aesthetic finish, suitable for decorative elements like urban sculptures or architectural facades.
Black Oxide Coating: A thin oxide layer for minimal corrosion protection in indoor applications, such as machine guards or interior brackets.