1. Why corrosion protection is essential Outdoor metal structures—such as fences, gates, railings, pergolas, staircases, and steel frames —are constantly exposed to rain, humidity, UV rays, salt air, and temperature changes .Without proper protection, steel and iron will oxidise, leading to rust, structural weakening, and costly repairs . Anti-corrosion paint forms a barrier that blocks moisture and oxygen from reaching the metal surface. 2. Identify the type and condition of