Galvanized strut steel refers to steel that has undergone a galvanization process, which involves coating the metal with zinc to prevent rust and corrosion. This protective layer enhances the steel's longevity, making it ideal for outdoor use and in environments prone to moisture. The strut design, characterized by its C-shaped cross-section, allows for easy installation and attachment of various components, such as electrical conduits, HVAC systems, and piping. This makes GI C iron channels a preferred choice among architects and engineers.