Unity Tube offers Integral Low Fin Tubing in a wide variety of tube materials. Unlike our other types of fin attachments, Integral Low Fin Tubing does not use a separate fin strip material to apply the fins. Instead, the fins are raised from the surface of the tube itself. This type of surface enhancement does not remove metal from the tube but displaces it while keeping the starting outside diameter measurements intact. This type of finned tube is commonly used in Shell & Tube Heat Exchangers as an enhanced alternative to a Prime Surface Tube.