Surface Treatment Of Bailey Steel Bridge Components

To withstand harsh outdoor conditions, Bailey steel bridges require comprehensive anti-corrosion treatment. The primary process is hot-dip galvanizing, in which components are immersed in molten zinc at 445–455°C, forming a protective layer approximately 80–120 microns thick that can provide a service life of up to 25 years in marine environments. For enhanced corrosion protection, additional coatings such as epoxy primer and polyurethane topcoat may be applied after galvanizing, creating a composite protective system.