H2 Conductive Tubing Heat Exchangers, with a 45+ year history, is our premium, ‘cold process’, heat exchanger that can be used for both chilling and heating. They are used in acid recovery systems, sulfuric acid and hydrochloric pickling tanks, as well as zinc ammonium chloride flux tanks. This tubing shares the same non-stick properties of all of our heat exchangers. The colder temperature from our H2 Conductive Tubing provides for optimized iron and zinc removal, and very reactive acid.