Perforated steel sheet is often galvanized for increased corrosion resistance. Galvanizing is a process that involves coating the steel sheet with a thin layer of zinc. The zinc acts as a barrier, protecting the steel from corrosion and oxidation. The added corrosion resistance makes galvanized perforated steel sheets an ideal choice for outdoor applications, such as stair treads, fence panels, and protective grates.
There are two types of manufacturing the metal, the hot-rolled metal and the cold-rolled metal. You can tell from its name, the hot-rolled metal is the metal that has been rolled at the high temperatures. The cold-rolled metal is manufactured based on the hot-rolled metal and then go through the cold reduction process.