Fin Tube For Air Cooled Heat Exchanger ASTM A179 Embedded Fin Type with Aluminium Strip

Fin Tube For Air Cooled Heat Exchanger ASTM A179 Embedded Fin Type with Aluminium Strip

Product Overview
Our finned tubes are the core heat transfer components for Air Cooled Heat Exchangers (ACHEs), engineered for maximum thermal efficiency in cooling process fluids with ambient air. This product features a durable ASTM A179 cold-drawn seamless carbon steel tube as the inner core, mechanically bonded to high-conductivity aluminum fins using the robust embedded (or “L-footed”) fin technology. This bimetallic construction creates an optimal balance: the carbon steel tube withstands internal process pressure and corrosion, while the aluminum fins dramatically increase the external surface area for highly efficient heat rejection to the air.

Key Features & Advantages

• Optimized Air-Side Heat Transfer: The aluminum fins provide a massive increase in surface area exposed to air, overcoming air’s poor thermal conductivity. This design is crucial for achieving compact and cost-effective air cooler designs.

• Durable Mechanical Bond – The Embedded Process: The aluminum fin strip is wrapped under tension, and its “L-shaped” foot is securely embedded into a precision-machined helical groove on the steel tube. This creates a permanent, tight mechanical bond with excellent contact and low thermal resistance, without the risk of solder corrosion or high-temperature limitations of some other methods.

• Material Synergy for Performance & Economy: The ASTM A179 carbon steel inner tube offers excellent internal pressure resistance, compatibility with a wide range of process fluids (water, oils, gases), and cost-effectiveness. The aluminum outer fins provide superior heat dissipation, light weight, and inherent corrosion resistance in atmospheric conditions.

• Reliability in Thermal Cycling: The embedded design accommodates differential thermal expansion between the steel tube and aluminum fin better than many bonded alternatives, maintaining bond integrity over long-term operation and thermal cycles.

• Custom-Engineered to Your Duty: We can supply fin tubes tailored to your specific thermal and mechanical design requirements, including variable tube lengths, diameters (OD), fin height, fin density (Fins Per Inch – FPI), and fin thickness.

Typical Applications

• Oil & Gas: Cooling refined products, lean amine, process water, and gas compressor aftercoolers in refineries, gas plants, and upstream facilities.

• Power Plants: Cooling turbine lube oil, closed-cycle cooling water, and auxiliary system fluids.

• Chemical & Petrochemical: Condensing and cooling process streams in various production units.

• Industrial Processes: Compressed air aftercoolers and general process fluid cooling.

Technical Specifications (Summary)

• Base Tube: ASTM A179 / ASME SA179, Cold-Drawn Seamless Carbon Steel.

• Fin Material: High-Purity Aluminum Strip (e.g., Al-1100).

• Fin Type: Embedded

• Key Geometrical Parameters (Customizable):

  • Tube Outer Diameter (OD): Commonly 1″, 1.25″ (25.4 mm, 31.8 mm)

  • Fin Height: Custom

  • Fins Per Inch (FPI): Typically 7-11 FPI

  • Fin Thickness: Custom

• Standards: Manufactured to meet API 661, and client specifications.

Why Choose Our Embedded Fin Tubes?
We focus on the precise engineering of the tube-fin interface—the heart of performance. Our controlled embedding process ensures optimal heat transfer from tube to fin, guaranteeing that your air cooled exchanger meets its design duty with reliable, long-lasting operation.