Air Cooler Tube Bundle | Finned Tube Bundle with Carbon Steel Tubes & Aluminum Fins – Hydrostatically Tested for Process Gas Cooling Applications
Need a custom quote for Air Cooler Tube Bundle? Contact our engineering team directly: jimmy@steelseamlesspipe.com
Yuhong Group: Complete Heat Exchanger Solutions – From Air Coolers to Shell & Tube
Yuhong Group Co., Ltd. designs and manufactures a comprehensive range of thermal equipment for global industries. Our core offerings include shell and tube heat exchangers, pressure vessels, air coolers, and a complete supply of critical components: finned tube bundles, U-tube bundles, heat exchanger tubesheets, and all related parts – ensuring full support for new projects and maintenance.
Shown in the attached photographs is one of our air cooler tube bundles (also known as finned tube bundles) undergoing hydrostatic pressure testing – a critical quality control step that verifies the integrity of the tube-to-tubesheet joints and the tube bundle's ability to withstand operating pressure.
Product Focus: Air Cooler Tube Bundle – Engineered for Reliable Air-Cooled Heat Transfer
The air cooler tube bundle is the core component of any air-cooled heat exchanger (fin-fan cooler). It consists of a finned tube bundle – multiple rows of tubes with extended surface fins – mounted in a structural frame with headers for process fluid distribution. Fans force ambient air across the finned tubes, removing heat from the process fluid.
Based on the images, this tube bundle exhibits:
Configuration: Air cooler finned tube bundle – multiple rows with aluminum fins
Tube material: Carbon steel (ASME SA179 typical) – providing reliable heat transfer
Fin material: Aluminum – offering excellent thermal conductivity and corrosion resistance
Headers: Carbon steel or stainless steel – distributing fluid across the tube bundle
Testing: Hydrostatic pressure testing in progress – ensuring leak-tight integrity
Construction: ASME/TEMA compliant
Key Components & Their Functions in an Air Cooler Tube Bundle
| Component | Material (Typical) | Role in Equipment Performance |
|---|---|---|
| Heat Exchanger Tube | Carbon steel (ASME SA179) | Carries process fluid; primary heat transfer surface. |
| Fins | Aluminum (extruded or wrapped) | Increase heat transfer surface area by 3-10* – essential for air-side heat transfer. |
| Header / Manifold | Carbon steel or stainless steel | Distributes process fluid across tube rows; provides inlet/outlet connections. |
| Tubesheet | Carbon steel or stainless steel | Anchors tubes; separates tube side from air side (no shell-side fluid). |
| Frame / Support | Galvanized steel | Supports the tube bundle; provides mounting for fans and plenum. |
| U-Tube Bundle (optional) | Carbon steel or alloy | U-bend design available for thermal expansion accommodation. |
| Nozzles | Carbon steel or alloy | Process fluid inlet/outlet connections. |
Technical Highlights of Our Air Cooler Tube Bundle
Hydrostatic tested (as shown in photos): Each air cooler tube bundle undergoes hydrostatic pressure testing before shipment to verify:
Tube-to-header joint integrity
Tube leak-tightness
Header and weld soundness
Compliance with ASME code requirements
Optimized fin density: We configure fin density (fins per inch) and fin height to match your thermal duty, airflow, and allowable pressure drop.
Extruded or wrapped fins: We offer extruded aluminum fins (for maximum durability and corrosion resistance) or wrapped fins (for cost-effective applications).
Corrosion protection: For coastal or corrosive environments, we offer galvanized steel frames, epoxy-coated headers, and stainless steel options.
Tube material options: Carbon steel (SA179), stainless steel (304/316L), copper alloy (C70600) – selected based on process fluid corrosivity.
Knowledge Module: Air Cooler Tube Bundle vs. Shell & Tube Tube Bundle – Key Differences
| Feature | Air Cooler Tube Bundle | Shell & Tube Tube Bundle |
|---|---|---|
| Heat transfer medium | Air (forced draft or induced draft) | Liquid or gas on shell side |
| Fins | Almost always finned (aluminum or copper) | Typically bare tubes (finned only for gas service) |
| Tube bundle support | Frame mounted; header connects to tubes | Tubesheet-mounted; shell encloses bundle |
| Maintenance | Bundle can be lifted out for cleaning | Removable for inspection and cleaning |
| Corrosion protection | External coatings often required | Shell provides external protection |
| Weight | Lighter – no pressure shell | Heavier – includes shell and flanges |
When to specify an air cooler tube bundle:
Water is scarce – air cooling eliminates water consumption
Remote locations – no cooling water infrastructure available
Process fluid is suitable for air cooling – not requiring very low outlet temperatures
Environmental restrictions – no cooling water discharge
Knowledge Module: Air Cooler Fin Types – Which to Choose?
| Fin Type | Description | Best For |
|---|---|---|
| Extruded (integral) fin | Fin and tube are one piece – no thermal contact resistance | Maximum durability; corrosive environments; high-temperature service |
| Wrapped (L-foot / G-foot) | Fin strip wrapped around tube – economical | Clean air, non-corrosive service; moderate temperatures |
| Plate fin | Continuous plate with multiple tube holes | High heat transfer; light-weight applications |
Hydraulic Testing – The Quality Assurance Step Shown in Photos
As shown in your photographs, our air cooler tube bundles undergo hydrostatic pressure testing, which:
Verifies weld and joint integrity – identifies any leaks before shipment
Confirms pressure boundary strength – ensures tube bundle can withstand design pressure
Provides documentation – hydrostatic test reports included with shipment
Demonstrates quality commitment – each bundle is individually tested
Typical Applications for Air Cooler Tube Bundles
| Industry | Application | Why Air Cooler |
|---|---|---|
| Oil & gas | Gas compressor cooling, natural gas cooling | Reliable, water-independent operation |
| Petrochemical | Reactor effluent cooling, product condensation | Handles high temperatures; no water consumption |
| Power generation | Generator air cooling, lube oil cooling | Water conservation; remote sites |
| Chemical processing | Process gas cooling, solvent condensation | Environmentally friendly; no wastewater |
| LNG / cryogenic | Natural gas heating before injection | Proven performance in cryogenic service |
Component-Only Supply – We Also Provide for Maintenance & Spares
If your existing air cooler needs replacement parts, we supply individual components without ordering a complete new bundle:
Finned tube bundles – direct replacement for existing air cooler frames – built to your drawing
Heat exchanger tubes – carbon steel, stainless steel, alloy – cut to length, finned or bare
Headers / manifolds – carbon steel or stainless steel – with or without nozzle connections
Tubesheets – drilled and grooved per your pattern
Fins – extruded or wrapped aluminum – to match your original configuration
Advantages of Ordering Air Cooler Tube Bundles from Yuhong Group
Exactly to your drawing: We manufacture to your dimensions, tube count, fin density, and header arrangement.
Fast turnaround: Typically 6-8 weeks for custom air cooler bundles.
Any material: Carbon steel, stainless steel, copper alloy, aluminum – all available.
Hydrostatic tested: Each bundle is pressure-tested and documented – as shown in your photographs.
Full documentation: Material test certificates (MTC), hydrostatic test reports, dimensional reports.
How to Specify a Replacement Air Cooler Tube Bundle Correctly
To avoid mismatches, we need the following information (send any of these):
Original bundle drawing – best option. We duplicate tube count, fin type, fin density, header arrangement, and overall dimensions exactly.
Old bundle (physical sample) – we can measure and reverse-engineer a perfect match.
Service conditions – process fluid, temperature, pressure, required cooling duty.
Common Errors to Avoid:
Incorrect fin type – extruded vs. wrapped – affects durability and heat transfer.
Wrong fin density – too few fins reduces heat transfer; too many increases airflow restriction.
Header nozzle orientation – must match existing piping.
Corrosion protection – for coastal applications, we recommend galvanized frames and epoxy-coated headers.
Quality Assurance & Documentation
Every air cooler tube bundle we ship includes:
Material Test Certificates (MTC) – for tubes, fins, and headers
Hydrostatic test report – as shown in the photographs
Dimensional inspection report – verifying fit to your equipment
PMI (Positive Material Identification) – available on request
Third-party inspection (SGS, BV, TÜV) – at buyer's request
Get a Quotation for Your Air Cooler Tube Bundle
To quote a finned tube bundle like the one in your photographs, send the following to jimmy@steelseamlesspipe.com:
Drawing (PDF, scan, or hand sketch with key dimensions: tube layout, fin type, fin density, header arrangement, overall bundle dimensions)
Or: send us your old bundle for reverse engineering (return shipping arranged)
Service conditions (process fluid, temperature, pressure)
Quantity required (single piece or production run)
We will respond with a dimensional drawing for approval, price, and delivery schedule – typically within 48 hours.
