Premium Wound Fin Tube (ASTM A179 Carbon Steel Base + Aluminum Fin)
1. Detailed Introduction of ASTM A179 + Aluminum Wound Fin Tube
The Wound Finned Tube (L-Type), combining an ASTM A179 seamless
carbon steel base tube with an Aluminum (AL) fin, is a highly
efficient heat transfer component designed for demanding industrial
applications. By leveraging the excellent pressure resistance of
A179 carbon steel and the superior thermal conductivity of
aluminum, this composite finned tube offers an optimal balance of
heat exchange efficiency, durability, and cost-effectiveness. It is
widely recognized as the industry standard for air-cooled heat
exchangers (ACHE) operating in moderate temperature environments.
2. Structure & Process: A179 Base Tube, AL Fin & Wrap-on
Technology
The exceptional performance of this product relies on its precise
structural design and advanced manufacturing process:
- Base Tube (ASTM A179): Made of seamless cold-drawn low-carbon
steel, providing high mechanical strength, excellent internal
pressure resistance, and reliable fluid containment.
- Fin Material (Aluminum 1060 / 1100): Chosen for its lightweight
nature, malleability, and outstanding heat dissipation
capabilities.
- Wrap-on Process (Tension Wound): The aluminum strip is mechanically
folded into an "L" shape at the base and then tension-wound tightly
onto the outer surface of the ASTM A179 base tube under high
pressure. The broad base of the L-shape ensures maximum contact
area for heat transfer and completely covers the carbon steel base
tube, acting as a protective shield against atmospheric corrosion.
3. Chemical Composition of ASTM A179 Steel & Aluminum Fin
To ensure structural integrity and heat transfer efficiency, we
strictly adhere to international material standards. Below is the
chemical composition for both the base tube and the fin.
Table 1: Chemical Composition of ASTM A179 Base Tube
| Element | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
|---|
| Percentage (%) | 0.06 - 0.18 | 0.27 - 0.63 | ≤ 0.035 | ≤ 0.035 |
Table 2: Chemical Composition of Aluminum 1060 Fin (Typical)
| Element | Aluminum (Al) | Silicon (Si) | Iron (Fe) | Copper (Cu) |
|---|
| Percentage (%) | ≥ 99.60 | ≤ 0.25 | ≤ 0.35 | ≤ 0.05 |
4. Dimensional Tolerance of A179 & AL Finned Tubes
Precision engineering is critical for heat exchanger assembly. Our
wrap-on finned tubes are manufactured to meet or exceed strict
international tolerance standards.
Table 3: Standard Dimensions and Tolerances
| Parameter | Standard Range / Typical Value | Manufacturing Tolerance |
|---|
| Base Tube Outer Diameter (OD) | 15.88mm (5/8") to 50.8mm (2") | ± 0.13 mm |
| Base Tube Wall Thickness | 1.65mm to 3.4mm | ± 10% |
| Fin Outer Diameter | 25.0mm to 75.0mm | ± 0.5 mm |
| Fin Pitch (Fins per Inch) | 7 FPI to 11 FPI | ± 2% |
| Fin Thickness | 0.3mm to 0.5mm | ± 0.05 mm |
| Unfinned End Length | 50mm to 150mm (Customizable) | ± 3.0 mm |
5. Performance Advantages of A179 Carbon Steel + AL Fin Tubes
- Maximum Thermal Efficiency: The tight mechanical bond between the
A179 steel and the AL fin eliminates air gaps, maximizing heat
transfer rates.
- Corrosion Resistance: The L-foot design completely covers the A179
base tube, protecting the carbon steel from atmospheric corrosion.
- Temperature Rating: Safely operates at continuous temperatures up
to 130°C to 150°C (266°F to 302°F) without loosening the fin bond.
- Cost-Effective Solution: Using A179 carbon steel instead of
stainless steel, combined with inexpensive aluminum fins,
significantly reduces project budgets while maintaining high
performance.
6. Industrial Applications of A179 + Aluminum Tension Wound Fin
Tubes
Thanks to their robust design, our A179+AL L-type fin tubes are
heavily utilized across various global industries:
- Petrochemical Refineries: Used in air-cooled heat exchangers (ACHE)
and gas coolers.
- Power Generation: Essential components for steam condensers and
generator cooling systems.
- HVAC Systems: Commercial air conditioning and large-scale
industrial ventilation units.
- Oil & Gas Processing: Gas compressors and fluid cooling
pipelines.
7. Our Manufacturing Advantages & Proven Experience
As a leading global supplier of heat exchanger tubes, we offer more
than just products; we deliver reliability.
- Decade of Expertise: Over 15 years of experience in manufacturing
and exporting A179 base tubes and Aluminum wrap-on fin tubes
globally.
- Strict Quality Control: 100% of our ASTM A179 base tubes undergo
hydrostatic testing and eddy current testing before the finning
process.
- Custom Fabrication: We customize fin pitch, tube lengths, and bare
end dimensions to perfectly match your engineering drawings.
- Global Standard Compliance: Fully compliant with ASME, TEMA, and
API 661 standards.
- Secure Packaging: Tubes are carefully packed in steel-framed wooden
cases with moisture-proof wrapping to ensure safe ocean freight
delivery.
Ready to upgrade your heat exchanger efficiency? Contact our
engineering sales team today for a competitive quote on your ASTM
A179 and Aluminum Finned Tube requirements!
