The ranges of industrial heat exchangers are produced on a large scale. They are intended to effect heat exchanges between two fluids or between a fluid and a solid, depending on the type of geometry associated. It may be tubularly shaped, wherein one of the fluids circulates within one or more tubes and / or in the form of plates, wherein the fluids circulate in a space limited by flat, swap surfaces. Its main advantage is the reuse of the lost energies (air or water). The material used in this type of equipment is stainless steel AISI 304 and AISI 316.