Laser welded finned tubes are used in civil wall mounted furnaces and industrial boilers. German technology is just emerging in China, but it has a history of more than ten years in Europe. Its advantage is that the contact thermal resistance is zero. Compared with high-frequency welding, it has the characteristics of large fin to chemical ratio, light weight and compact volume of assembled heat exchanger. It is more energy-saving and environmental friendly and meets the national emission requirements It is made of stainless steel, titanium, copper, carbon steel and other materials, mainly high-frequency welded finned tubes. Although it is more advanced in product quality and production automation compared with inlay, brazing and other methods, there are still many deficiencies in heat exchange efficiency and ash prevention of high-frequency welded finned tubes due to factors such as difficult penetration and wrinkles at the root of high-frequency welded finned tubes. In view of the above reasons and in response to the national guidelines and policies on energy conservation and emission reduction. Laser welded finned tube is the most advanced product.
