ASME SA192 KL Type Finned Tube with Al1060 Fins For Heat Recovery Steam Generators ASME SA192 KL Type Finned Tube with Al1060 Fins is a high-performance heat exchanger tube. It consists of a strong steel core tube (SA192) designed to handle high pressure, mechanically bonded to highly efficient aluminum fins (Al1060) that maximize heat transfer. The "KL Type" specifies the physical shape and attachment method of the fins. It's essentially a best-of-both-worlds component: the