H-type finned tube has two kinds of single H-type and double H-type finned tube, in contrast, the double H-type finned tube is higher in strength and rigidity than the single H-type finned tube, can be used in a long arrangement space, and the H-type finned tube is more resistant to wear than the traditional finned tube. When used, the arrangement of the order arrangement can make the H-type fin tube can achieve the function of self-cleaning when passing the heat exchange medium, so it is not easy to accumulate ash, can increase the service life of the equipment and reduce the maintenance and use cost.H-type finned tube is mainly used in Marine boilers, power plant boilers, industrial boilers, furnaces, etc. Because the structure of H-type finned tube is different from other finned tubes, it adopts a unique shape structure, and makes multiple heat sinks contact welding on the surface of the punching welded steel pipe, which can better heat the surface and weld the solid, achieve no pore welding slag, and the welding fusion rate is as high as 98%. It has a good heat transfer coefficient