Galvanized steel: - A sheet of black sheet coated with a layer of zinc acquired a resistance to rust caused by weather effects also earned a scene Well a special glamor.
And it is used for most of the sheet metal .. such as water tanks and air-conditioning duct

Features galvanized steel: -

• Resistant to rust and corrosion
• Cheap
  
• Easily welded tin and mortar
  
• Easy configuration