Shiny aluminium round billets fall from conveyor belt closeup. Rondol is a technical term, name of aluminum billet for production of tube or container for aerosols. Is a disc with a thickness of a few millimeters in diameter corresponding to diameter of tube of future. In production applies only to tape from primary aluminium without impurities of secondary production. All products undergo heat treatment. Then by conveyor into tray for drying and storage. They have pure metallic luster.