High-frequency welded finned tube, a commonly used heat exchange element, operates under harsh conditions of high-temperature flue gas environments, such as the fins tubes used in boiler heat exchangers. These conditions include high temperature, high pressure, and corrosive atmospheres, demanding that high-frequency welded finned tubes possess high performance standards, including: corrosion resistance, wear resistance, low contact thermal resistance, high stability, and dust prevention capabilities.

The spiral high-frequency welded finned tube has gained widespread popularity and trust in the current application market. Its applications span across industries such as power generation, metallurgy, cement production for waste heat recovery, and petrochemicals. Thanks to its rapid welding speed and strong self-cooling effect on the weldments, the product boasts a small heat-affected zone and is less prone to oxidation. Consequently, the weld's structure and performance are exceptional.

In fact, the spiral high-frequency welded finned tube not only meets various performance requirements but also significantly increases the heat exchange area. Analyzing its working principle, the product heats the outer surface of the steel strip and the steel tube simultaneously by utilizing the skin effect and proximity effect of high-frequency current, until it reaches a plastic state or melts, and completes the welding under a certain pressure of the wrapped steel strip.

This high-frequency welding can be regarded as a solid-phase welding method, which boasts distinct advantages in terms of product quality, production efficiency, and automation. Simply put, high-frequency welded finned tubes are a type of heat transfer element. Their heat transfer area is several to tens of times that of a hollow tube, enhancing heat transfer, reducing fluid resistance, minimizing metal consumption, thereby improving the economic efficiency and operational reliability of heat exchange equipment.

The superior characteristics are actually due to the improvement in the structure of the high-frequency welded finned tube during the design and manufacturing process. The finned tube itself involves wrapping steel strips around the tube and then using high-frequency welding technology to securely bond the fins to the tube, ensuring a strong connection between the tube and fins. Consequently, high-frequency welded finned tubes offer advantages such as high heat exchange efficiency, large heat dissipation area, and long service life.