After the fabrication and welding of any of our equipment is complete, passivation is the next step. Passivation is the process of restoring the damaged oxide layer to prevent corrosion in stainless steel. Using a conductive weld cleaning brush, a mild electrolytic cleaning fluid is applied to the welded joint. A strong electric current is then used to accelerate the process. 

Without passivation, contaminants in the environment (such as chlorides) can react with free iron on the surface of the metal and start the corrosion process, which will extend into the component via the weld.