Product Specification

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

Table 2: Chemical Composition of Aluminum 1060 Fin (Typical)

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

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!