China Factory Welded Fin Tube Manufacturer and Supplier
Welded fin tubes are heat exchange elements in which fins are attached to a base tube through welding, primarily used to enhance heat transfer efficiency. Depending on the welding process, they are classified into the following types:
High-frequency Welded Helical Fin Tubes for Heat Exchanger
High-frequency Welded Helical Fin Tubes is a high-frequency current is passed through the base tube to generate heat, melting the fins and rapidly solidifying them, creating a secure connection. This process is highly automated and suitable for mass production, but may pose a risk of oxidation at the weld joint.
Laser welded Fin Tubes for Heat Exchanger
Laser welded Fin Tubes is a laser beam melts the surface metal of the base tube and fins, forming a metallurgical bond. This process offers high precision and minimal deformation, making it particularly suitable for precision welding. However, the equipment cost is relatively high.
Longitudinal Fin Tubes for Heat Exchanger
The fins of the longitudinal finned tube are arranged in the same direction as the base tube (i.e., the fin direction is consistent with the axial direction of the base tube). The heat transfer efficiency is enhanced by welding longitudinally arranged metal fins on the surface of the base tube. It is mainly used in heat exchange systems of industrial equipment.
Serrated Fin Tubes for Heat Exchanger
Serrated fin tubes are a special type of fin tube that enhances heat transfer efficiency by machining a serrated structure on the fin surface. Its core feature is that there is no gap between the fin and the base tube, and the heat dissipation area can reach more than 95%.
H Type Fin Tubes for Heat Exchanger
H-type finned tubes are a device that enhances heat transfer by increasing the heat exchange area outside the tube, and are primarily used in waste heat recovery systems. Their structure consists of two fins symmetrically welded to a base tube, and their shape resembles the letter “H,” hence the name.
Studded Fin Tubes for Heat Exchanger
Studded finned tubes utilize a nail-head structure to expand the heat transfer area. Typically, this area can reach 2-4 times that of a plain tube, while weighing approximately 1.2-1.5 times and providing 2-4 times the thermal strength. This structure enhances heat transfer while maintaining low resistance, making it suitable for high-temperature, high-pressure, and corrosive environments.
All these processes significantly increase the heat transfer area and are widely used in high-temperature and high-pressure applications such as boilers, power plants, and chemical plants.
Welded Finned Tube By Process

Top Features of Welded Finned Tube
Welded fin tubes offer a stable structure, and the welding process ensures a tight fit between the fins and the base tube, reducing the risk of crevice corrosion and extending service life. For example, laser-welded fin tubes offer high penetration, which prevents crevice corrosion.

Welded Finned Tube Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required