For many machinery and equipment manufacturers, corrosion has been a major problem. There has been an increased need for corrosion protection. For example, parts in the printing industry or parts for the marine environment place high demands on the surface of the material. Several attempts have been made to improve protection. Products have been made entirely of stainless steel or welded on a stainless steel jacket, but the methods are very costly. NILIT, on the other hand, has proven to be an economical solution. A process developed to increase the corrosion protection of machines and process equipment made of steel and cast iron, which are exposed to high corrosion stresses, e.g. rollers for printing machines and pipes for the chemical industry.