ASME SA179 KL Type Wound Finned Tubes for Air-Cooled Heat Exchangers

ASME SA179 KL Type Wound Finned Tubes are designed for air-cooled heat exchangers requiring efficient air-side heat transfer and reliable mechanical fin attachment. Manufactured using seamless low-carbon steel tubes conforming to ASME SA179, these finned tubes feature aluminum fin strips mechanically wound around a knurled base tube. The specially designed L-shaped fin foot provides enhanced mechanical engagement with the tube surface, helping maintain fin stability during operation. By increasing the external heat transfer area, KL type finned tubes improve heat exchange efficiency while offering a cost-effective solution for industrial cooling systems. They are particularly suitable for air-cooled heat exchangers used in oil and gas processing, petrochemical plants, and other industrial facilities where dependable thermal performance and economical equipment operation are required. Tube dimensions, fin materials, fin height, and fin pitch can be customized according to customer drawings and operating conditions.

Air-Cooled Heat Exchangers

Used in fin-fan heat exchangers to increase the external heat transfer surface area, facilitating the cooling of process fluids through forced or induced ambient airflow.

Oil & Gas Processing

Applied in process air coolers for cooling hydrocarbons and other process fluids in oil and gas treatment facilities.

Petrochemical Plants

Suitable for industrial cooling systems where efficient heat dissipation and reliable thermal performance are required.

Natural Gas Processing

Used in air-cooled equipment for gas cooling and temperature control during natural gas processing operations.

Industrial Cooling Systems

Applied in industrial heat exchangers where air is used as the cooling medium to reduce water consumption and support continuous operation.

• Enhanced Fin Retention: Knurled L-shaped fin feet provide improved mechanical engagement between the fins and base tube.

• Increased Heat Transfer Area: Aluminum fins expand the external surface area, improving air-side heat exchange.

• Cost-Effective Construction: SA179 carbon steel base tubes provide an economical material solution for conventional heat exchanger applications.

• Customized Configuration: Fin height, thickness, pitch, tube dimensions, and overall length can be manufactured according to project requirements.

• Reliable Manufacturing: Mechanical winding ensures consistent fin attachment and dimensional uniformity when produced under controlled conditions.

The base tube material complies with ASME SA179 requirements. The following values represent the standard chemical composition and mechanical property requirements.

Note: The above chemical composition and mechanical properties apply to the SA179 base tube, not the aluminum fins. Actual material test results are subject to the supplied Material Test Certificate (MTC).

Quality control is carried out throughout the manufacturing process to ensure dimensional accuracy, material traceability, and consistent fin attachment.

The following documents can be provided according to project and purchase order requirements:

• EN 10204 3.1 Material Test Certificate

• Chemical Composition Report

• Mechanical Test Report

• Dimensional Inspection Report

• Final Inspection Report

• Third-Party Inspection Report (if required and agreed)