👉 Tinning is a process in which a material, such as steel or aluminum, is first heated to a high temperature and then subjected to a rolling process. This process involves applying pressure on the surface of the metal to create a uniform layer of steel or aluminum with a specified thickness. The term "tinning" comes from the German word "Tinten," which means "to tint." The process can be applied to various materials, including steel and aluminum, but it is most commonly used for