Round steel can have different surface finishes. The as - rolled surface is the natural finish after hot - rolling, which is relatively rough. A polished surface can be achieved through processes like grinding and buffing, providing a smooth and shiny appearance, often used in decorative applications. Galvanized surfaces offer corrosion resistance with a zinc - coated Slāni . anodētas virsmas var iegūt dažiem sakausējuma apaļajam tēraudam, uzlabojot korozijas pretestību un nodrošinot dažādas krāsas estētiskiem mērķiem .