2. What Is an Extruded Aluminum Fin Tube

The extruded aluminum fin tube consists of an aluminum sleeve and a base tube. Extrusion forms fins directly from the sleeve during manufacturing. This process tightly bonds fins to the tube surface. As a result, the structure eliminates air gaps and thermal resistance. In turn, the tube provides stable heat transfer performance.

ASME Heat Exchanger Standards
https://www.asme.org

3. Why Extrusion Technology Matters

In turn, extrusion technology enhances the heat exchanger’s reliability. First, it forms a permanent mechanical bond. Second, the method prevents fin loosening during thermal cycling. Third, it guarantees uniform fin geometry. For these reasons, the extruded aluminum fin tube outperforms most conventional designs.

4. How an Extruded Aluminum Fin Tube Works

Fluid flows through the base tube at first. After that, heat transfers through the tube wall. Next, aluminum fins evenly spread the heat across a larger surface. At the same time, air or gas removes heat from the fins. The system maintains a stable operating temperature as a result. Fins bond directly to the tube, ensuring efficient heat transfer.

5. Other Design Features and Materials

Base Tube Materials

Base tubes are commonly made from carbon steel, stainless steel, or copper, depending on the application’s operating conditions.

Aluminum Fin Sleeve

Utilizing high-purity aluminum enhances electrical conductivity and corrosion resistance.

Fin Geometry

Consistent fin height and spacing facilitate better airflow and heat transfer.

Tube Surface Bonding

The extrusion process ensures a solid bond with zero contact resistance between the fins and the tube.

These features collectively enhance the overall thermal performance.

6. Performance Advantages

The extruded aluminum fin tube has obvious benefits:

Superior heat transfer coefficient

Strong mechanical adhesion

High vibration resistance

Long lifespan

Thermal deformation resistance

Low maintenance

Uniform airflow

As a result, this type of fin tube can meet industrial needs.

7. Comparison with Other Fin Tube Types

Extruded vs L-Foot Fin Tube

The extruded fin tube has greater bonding strength and heat transfer.

Extruded vs Embedded Fin Tube

The extruded fin tube has full surface contact instead of partial embedment.

Extruded vs Welded Fin Tube

The extruded fin tube reduces thermal resistance due to the absence of weld seams.

Due to the above reasons, the extruded aluminum fin tube may have higher efficiency.

8. Industrial Applications

Industries supported by extruded aluminum fin tubes:

• Air-cooled heat exchangers
• Oil and gas processing
• Petrochemical plants
• Power generation
• HVAC systems
• Waste heat recovery
• Refineries
• Industrial dryers

Industries need durability and heat transfer stability.

9. Bangwin Thermal’s Manufacturing Capability

Bangwin Thermal is an extruded aluminum fin tube manufacturer. Production lines are configured for many tube diameters and fin densities. Materials and dimensions are customized for specific projects. You can browse our heat exchanger solutions at customindustrialheatexchanger.com.

Manufacturing strengths include:

• Advanced extrusion finning machines
• Dimensional control
• High-grade aluminum materials
• Custom fin geometry design
• OEM and bulk production
• Export experience to global markets

Customers trust Bangwin Thermal for reliable fin tube solutions.

10. FAQ

1. Why are extruded aluminum fin tubes efficient?

Full-surface bonding reduces thermal resistance.

2. What base tube materials can be used?

Carbon steel, stainless steel, and copper are typical.

3. Can extruded fin tubes be used outdoors?

Yes. Aluminum fins are corrosion and weather resistant.

4. Does Bangwin Thermal customize fin geometry?

Yes. Fin height, spacing, and tube length can be modified.

5. Do extruded fin tubes need frequent maintenance?

No. Service life is long with little maintenance.