Yuhong Group Co., Ltd. is a recognized global manufacturer and direct supplier of high-performance thermal processing equipment and critical heat transfer components. Specializing in shell and tube heat exchanger systems, pressure vessels, and air cooled heat exchangers, we deliver engineered-to-order heat exchange solutions for refineries, petrochemical plants, power generation, and natural gas processing facilities worldwide.
In addition to complete heat exchange equipment, Yuhong Group supplies a full range of precision-machined spare parts and replacement components, including finned tube bundle assemblies, u tube bundle units, seamless heat exchanger tubes, heat exchanger tubesheet plates, baffles, headers, and custom flanges.
The air cooler tube bundle (also known as an air-cooled heat exchanger bundle) is the core heat transfer module within air cooled heat exchangers. Designed to transfer thermal energy from process fluids directly to ambient air, our finned tube bundles are engineered to withstand extreme temperatures, high operating pressures, and corrosive environments common in hydrocarbon processing.
Whether you require a complete replacement tube bundle for existing field units or a custom-designed finned tube bundle for new engineering projects, Yuhong Group offers precision fabrication fully compliant with API 661 and ASME Section VIII Div. 1 standards.
We manufacture a versatile range of header designs and bundle layouts tailored to your specific process requirements:
Plug Header Bundle: Ideal for high-pressure service (e.g., hydrocracking, gas compression). Features removable threaded plugs opposite each tube for easy cleaning and maintenance.
Cover Plate Header Bundle: Suitable for lower pressure and highly fouling fluids. The removable cover plate allows complete access to the heat exchanger tubesheet and internal tube surface.
Manifold / Pipe Header Bundle: Engineered for high-temperature and extreme pressure applications in chemical and petrochemical processes.
U-Tube Bundle (U-Bend Bundle): Designed with u tube bundle architecture to accommodate differential thermal expansion without thermal stress on the header tubesheet joint.
| Component | Technical Material & Fabrication Options | Function & Application Highlights |
| Heat Exchanger Tubes | Carbon Steel (A106B, A179), Stainless Steel (304L, 316L, 321, 2205 Duplex), Alloy Steel (P9, P11, P22), Copper Alloy, Titanium. | Seamless or welded heat transfer tubes manufactured to strict dimensional tolerances for optimal thermal performance. |
| Fin Types |
Extruded (Bimetallic): Aluminum fin extruded over inner base tube. Embedded (G-Fin): Fin mechanically embedded into outer wall groove. Wrapped (L/KL/LL-Fin): Tension wrapped around outer tube surface. |
Maximizes external heat transfer area up to 20x compared to bare tubes, dramatically improving cooling capacity in ambient air. |
| Heat Exchanger Tubesheet & Headers | SA516 Gr.70, SA240 304/316L, Forged SA105, SA182 F316L, SA336. Weld overlay / cladding available. | Serves as the structural anchor securing the heat exchanger tubesheet and pressure boundary for fluid distribution. |
| Nozzles & Flanges | WN Flanges, Long Weld Neck Nozzles, Custom Forgings (ANSI / ASME B16.5). | Ensures leak-free integration into upstream/downstream piping in oil refineries and gas processing plants. |
| Structure & Support Frame | Galvanized Carbon Steel, Heavy-duty Structural Channels, Tube Spacers, Baffle Plates. | Prevents tube vibration, maintains air channel alignment, and resists atmospheric corrosion in offshore/marine sites. |
Advanced Mechanical Expansion & Welding: Tube-to-tubesheet joints are executed using strength welding combined with precise torque-controlled expansion to eliminate leakage risks under thermal cycling.
Optimized Thermal Performance: Advanced finning processes ensure zero air gap between base tube and fins, guaranteeing maximum heat transfer efficiency and extended service life.
Direct Drop-in Replacement: Dimensional compatibility with existing shell & tube heat exchanger structures and air cooler frames for seamless site maintenance and retrofitting.
Corrosion & Erosion Protection: Optional hot-dip galvanizing, anti-corrosion coating, or alloy cladding for severe marine or H2S/CO2 acid gas environments.
When purchasing or replacing an air cooler tube bundle, engineering teams should evaluate the following key parameters to ensure long-term operational reliability:
Fin Type Selection vs. Operating Temperature:
L/LL Fin: Suitable for temperatures up to 130°C to 180°C.
G-Fin (Embedded): Recommended for temperatures up to 400°C with high mechanical stability.
Extruded Fin: Provides the highest corrosion protection for base tubes in marine/offshore environments up to 300°C.
Thermal Stress Management: In high-temperature or wide delta-T applications, thermal expansion between the bundle structure and process tubes must be mitigated using sliding supports or u tube bundle designs to prevent tubesheet joint failure.
Fouling Factor & Maintenance Access: For fluids prone to scaling or heavy fouling, plug headers or cover plate headers are essential to facilitate mechanical cleaning with high-pressure water jets without dismantling the entire tube bundle.
Our finned tube bundle and heat exchanger components are widely installed in:
Petroleum Refining: Crude distillation units (CDU), hydrotreaters, catalytic reformers, overhead condensers.
Oil & Gas Processing: Gas dehydration, NGL recovery, offshore platform gas compression cooling, LNG liquefaction modules.
Petrochemical & Chemical: Ethylene plants, ammonia plants, aromatics units, process fluid cooling.
Power Generation: Steam turbine air-cooled condensers (ACC), auxiliary loop cooling.
Looking for reliable finned tube bundle replacements, heat exchanger tubesheet components, or custom shell and tube heat exchanger spares?
Company: Yuhong Group Co., Ltd.
Website: www.tema-heatexchanger.com
Direct Email: jimmy@steelseamlesspipe.com
Standards Supported: ASME, API 661, TEMA Class R/C/B, PED, ISO 9001
