Pickets posts are categorized by their corrosion resistance, including galvanized picket posts and painted picket posts. Both types of picket posts offer good corrosion resistance. The production process for galvanized picket posts involves hot galvanizing, which is highly effective against corrosion. The posts are dipped into a galvanizing furnace for zinc coating, ensuring even zinc distribution and a bright, attractive finish. Custom colors are available: zinc silver, spray-painted green, white, blue, and more.