What are Laser Welded Fin Tubes?

Laser-welded fin tubes are high-efficiency heat exchange components that securely connect the fins to the base tube using laser welding technology. They achieve weld penetration rates of up to 99% and minimize thermal resistance. Materials available include carbon steel, stainless steel, copper, and titanium.

Due to their precise welding process and excellent heat transfer performance, laser-welded fin tubes have become core components of heat exchange equipment in the HVAC, chemical, and power industries.

The core advantage of laser-welded fin tubes stems from their unique laser welding process.

Laser welding utilizes a high-energy-density laser beam as a heat source, instantly melting and fusing the fins and base tube at their interface. Compared to traditional high-frequency welding and brazing processes, laser welding results in a significantly smaller heat-affected zone (0.1-0.5миллиметр), minimizing deformation of the base tube and fins and preventing degradation of material properties caused by high temperatures.

The laser weld features a narrow, uniform weld penetration, achieving a bond strength between the fins and base tube exceeding 90% of the parent metal strength. This effectively prevents fin detachment and fluid leakage, significantly extending the component’s service life.

In terms of performance, laser-welded finned tubes exhibit outstanding heat exchange efficiency.

Due to the near-zero welding gap, heat can be transferred rapidly and losslessly from the base tube to the fins, reducing thermal resistance. Combined with spiral or serrated fin designs, its heat dissipation area can be increased by 5-10 times compared to plain tubes, resulting in a heat exchange efficiency 15%-20% higher than traditional finned tubes under the same operating conditions.

Laser-welded finned tubes are compatible with various base tube materials, such as stainless steel, carbon steel, and copper, allowing for flexible selection based on different media (hot water, steam, corrosive fluids), making them highly versatile.

Regarding application scenarios, laser-welded finned tubes are widely used in residential building heating radiators, industrial waste heat recovery devices, and chemical reactor cooling systems.

In low-temperature heating, high humidity, or corrosive environments, their stable structure and corrosion resistance ensure long-term efficient operation of equipment, making them the preferred component in the current field of high-efficiency heat exchange.