High-Efficiency Finned Tube Coil by Datang Finned Tube
At Datang Finned Tube, we specialize in engineering high-performance Finned Tube Coils designed for superior heat transfer in demanding industrial environments. Our coils are the core components for air-cooled heat exchangers, boilers, and HVAC systems, ensuring maximum thermal efficiency and durability.
Why Choose Datang’s Finned Tube Coils?
-
Superior Heat Transfer: By utilizing advanced finning technologies (Extruded, L-Foot, or High-Frequency Welded), our coils significantly increase the surface area, optimizing heat exchange between fluids and air.
-
Custom Engineering: Every Datang Finned Tube coil is custom-built to meet your specific pressure, temperature, and dimensional requirements.
-
Corrosion Resistance: We offer a variety of material combinations, including Carbon Steel, Stainless Steel, Copper, and Aluminum, ensuring a long service life even in harsh environments.
What is a Finned Tube Coil?
A finned tube coil is a specialized heat exchanger designed to maximize heat transfer between a liquid (flowing through the tubes) and a gas, typically air (flowing over the tubes). By adding “fins” to the exterior surface of the tubing, the surface area is significantly increased, making the heat exchange process much more efficient.
1. How It Works
In a standard smooth tube, the air side has a much lower heat transfer coefficient than the liquid side. The fins act as a force multiplier:
-
Surface Area Expansion: Fins can increase the external surface area by 12 to 50 times that of a bare tube.
-
Heat Dissipation: As hot fluid flows through the tube, heat conducts into the fins. The ambient air passing over these fins carries the heat away more effectively due to the increased contact area.
2.Core Components of a Coil
A complete coil assembly typically consists of:
-
Tubes: Usually copper, carbon steel, or stainless steel.
-
Fins: Mostly aluminum (for weight and conductivity) or steel/copper.
-
Headers/Manifolds: The entry and exit points for the internal fluid.
-
Frame/Casing: Holds the tube bundle in place and protects the fin edges from damage.
3.Common Types of Finned Tubes
The method of attaching the fin to the tube determines the coil’s durability and heat transfer efficiency:
| Type | Description | Best For |
| Extruded Finned Tube Coils | The fin is extruded from an outer aluminum muff, providing 100% contact with the base tube and excellent atmospheric corrosion resistance. | High-corrosion environments and high heat transfer. |
| L/LL/KL Foot Finned Coils | Ideal for moderate temperatures, providing a protective layer over the base tube. | Standard industrial cooling; protects the tube from some corrosion. |
| Embedded (G-Type) Coils | Designed for high thermal loads and higher operating temperatures, where the fin is mechanically locked into a groove. | High-temperature applications (up to 400°C). |
| High-Frequency Welded (HFW) Coils | Fins are helically welded to the tube using high-frequency current. | Power plants, boilers, and heavy industrial heaters. |
Technical Specifications & Materials
We offer a wide range of material combinations to ensure compatibility with your specific working fluids and environmental conditions.
-
Base Tube Materials: Carbon Steel (e.g., A179, A106), Stainless Steel (304L, 316L), Copper, Cupro-Nickel, and Duplex Steel.
-
Fin Materials: Aluminum (1060/6063), Copper, Carbon Steel, and Stainless Steel.
-
Tube OD Range: 12.7mm to 50.8mm (Custom sizes available).
-
Fin Density: Up to 400 fins per meter (10-12 FPI), depending on the fin type.
-
Working Pressure: Designed to withstand high-pressure requirements up to 30MPa+.
| Feature | Description / Capability (Datang Finned Tube) |
| Base Tube Materials | Carbon Steel, SA213/SA312 Stainless Steel, Copper, Titanium |
| Fin Materials | Aluminum, Copper, Carbon Steel, Stainless Steel |
| Fin Types | G-Type (Embedded), L/LL/KL-Type, Extruded, HFW, Laser Welded |
| Applications | Air Cooled Heat Exchangers (ACHE), Steam Air Heaters, Economizers |
| Testing | Hydrostatic Test, Pneumatic Test, Eddy Current Testing |
4.Typical Applications
Because they are so efficient at moving heat into the air, these finned tube coils are found in:
-
HVAC Systems: Air conditioning evaporators and condenser coils.
-
Process Cooling: Cooling oil or water in industrial machinery.
-
Energy Power Plants: Air-cooled condensers (ACC) and steam air preheaters.
-
Dry Coolers: Used in large-scale data center cooling or chemical plants.
Efficiency Tip: The “Fin Pitch” (number of fins per inch) is critical. While more fins increase surface area, they also increase air resistance (pressure drop). Balancing the Fins Per Inch (FPI) with the fan power is the key to an optimized design.
5.Key Advantages of Datang Finned Tube Coils
Why do global engineering firms trust Datang Finned Tube?
-
Optimized Heat Flux: Our design team calculates the ideal fin pitch and height to minimize air-side pressure drop while maximizing heat transfer.
-
Unrivaled Durability: We use advanced welding and tension-winding techniques to ensure fins remain tight and efficient even after years of thermal cycling.
-
Corrosion Protection: For harsh environments (coastal or chemical plants), we provide specialized coatings and materials like galvanized steel or high-grade stainless steel.
-
Custom Configuration: From standard rectangular banks to complex circular or U-bend configurations, we tailor the coil geometry to fit your existing housing.
6. Quality Assurance & Testing
At Datang Finned Tube, quality is non-negotiable. Every coil assembly undergoes rigorous inspection before shipment:
-
Hydrostatic Pressure Testing to ensure leak-free performance.
-
Air-Tightness Testing for vacuum or sensitive gas applications.
-
Dimensional Inspection to ensure a perfect fit at your site.
-
Material Certification (MTC) provided for all components.
7. Request a Quote from Datang Finned Tube
Ready to optimize your heat transfer system? Datang Finned Tube provides end-to-end service, from technical design to global logistics.
-
Email: info@datangpipe.com
-
Website: www.datangfinpipe.com
-
Whatsapp: +86 15690122018
Finned Tube Coil by Process
The base tube and fins are integrally formed without welds, and the fins are usually made of aluminum or copper.
The heat exchange element, manufactured using high-frequency welding technology, features a serpentine design and high-frequency welding technology.
A thin strip is tension-wound around the tube.Ideal for moderate temperatures, providing a protective layer over the base tube.
Fins are placed into a pre-cut groove on the tube surface for better mechanical bond.Designed for high thermal loads and higher operating temperatures, where the fin is mechanically locked into a groove.
Fin Tube Coil by Materials
In the production of finned tube coils, the choice of material is the decisive factor for heat transfer efficiency, corrosion resistance, and service life. Based on the manufacturing expertise of Datang Finned Tube, these coils are generally categorized into four core material groups:Steel Finned Tube Coils,Copper and Copper Alloy Coils,Bimetallic (Aluminum Fin) Coils,Special Alloy Coils.
-
Carbon Steel (A179, A106, Q235) Fin Tube Coil
-
Features: Low cost, high strength, and excellent high-temperature resistance.
-
Common Grades: SA179, SA106, Q235.
-
Applications: Commonly used in thermal oil heat exchangers, boiler economizers, and non-corrosive gas heating/cooling. These are often hot-dip galvanized to enhance corrosion protection.
-
-
Stainless Steel (SS304, SS316L, SS321, SS310S) Finned Tube Coil-
Features: Exceptional corrosion resistance and high-temperature oxidation resistance; high cleanliness standards.
-
Common Grades: SS304, SS316L, SS321, SS310S.
-
Applications: Food and pharmaceutical industries, strong acid/alkali chemical environments, and ultra-high temperature waste heat recovery.
-
-
Bimetallic Composite Fin Tube Coil-
Structure: A base tube made of steel or copper (for pressure containment) with an aluminum muff extruded to form the fins.
-
Advantages: Combines the pressure resistance of the base tube with the high heat dissipation of aluminum. The “muff” completely covers the base tube, providing excellent corrosion protection.
-
Datang Advantage: This is a flagship product for Datang Finned Tube, widely utilized in power plant air-cooling systems.
-
-
Pure Copper Finned Tube Coil-
Features: Superior thermal performance and excellent ductility for easy processing.
-
Applications: Air conditioning condensers, unit heaters, and small-scale cold storage.
-
-
Cupro-Nickel Finned Tube Coil-
Common Grades: B10 (90/10), B30 (70/30).
-
Applications: Marine Engineering and Shipbuilding. Its outstanding resistance to seawater corrosion makes it the standard for marine coolers.
-
-
Titanium Alloy Finned Tube CoilUsed in environments with high chloride ion concentration or chemical bleaching equipment.
-
Nickel Alloys / Hastelloy Finned Tube CoilEngineered for extreme chemical corrosion and high-pressure/high-temperature environments.
Features of Finned Tube Coil
Datang Finned Tube‘s high-performance Finned Tube Coils combine superior thermal efficiency with structural durability and deep customization; by utilizing precision manufacturing techniques such as extrusion, high-frequency welding, or mechanical winding to dramatically increase the surface area, they ensure exceptional pressure and corrosion resistance while providing compact, long-lasting, and low-pressure-drop heat transfer solutions tailored to the rigorous demands of the power, petrochemical, and HVAC industries.
Customizable Finned Tube Coil
We can customize the material, specification and length according to your requirements.Solve your problems anytime and anywhere. Customize fin tubes and equipment according to your needs. Provide free technical guidance. Welcome to customize with drawings, so that you can purchase without worries.
Fin Tube Bending Machine
Fin tube bending machines are metalworking equipment used to plastically deform finned tubes (such as aluminum and copper tubes) into specific angles or shapes.
Manual bending machines: Manually operated, suitable for small-batch production or simple bending needs.
Hydraulic bending machines: Driven by a hydraulic system, suitable for large-scale production and complex bending tasks.
CNC bending machines: Computer-controlled, capable of high-precision bending and complex shapes, suitable for modern production.
Finned Tube Coil Package
Payment Terms:T/T, LC
Delivery: 15-30 days after payment
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Iron frame packing boxes and the desiccants are put into each package for continental transportation as well. or as required
Finned Tube Coil Quality Checks
Each of our finned tube coil is subjected to stringent quality checks.Inspection and Tests Performed:
1.Chemical Composition inspection。
2.Mechanical Properties Test(Tensile Strength, Yield Strength, Elongation, Flaring, Flattening, Hardness, Impact Test).
3.Surface and Dimension Test.
4.No-destructive Test.
5.Hydrostatic Test.
Finned Tube Coil Application
Finned tube coils for NPP (Non-Potential Reactor) are primarily used in critical components such as reactor cooling systems and steam-water reheaters (MSRs), undertaking the core functions of heat exchange and temperature control. These finned tubes are manufactured by rolling patterns onto the surface of the base tube before winding the fins, resulting in a tighter bond between the fins and the base tube. This significantly improves heat transfer efficiency and enhances corrosion resistance, making them suitable for high-temperature, high-pressure, and highly corrosive environments.
It is suitable for scenes requiring high temperature and high pressure heat dissipation, such as chemical equipment. Its carbon steel and stainless steel base tubes can withstand high temperature and high pressure, and the aluminum or copper fins provide efficient heat conduction.
It is used in scenarios with high requirements for heat dissipation efficiency, such as substation equipment systems, and its compact structure adapts to installation requirements in small spaces.
In heating radiators, serpentine fin tubes create turbulence by bending the pipes, enhancing the heat exchange efficiency between the heat medium and the pipe wall. At the same time, the dense fins expand the heat dissipation area, making it suitable for scenarios such as homes and commercial buildings.
In greenhouses, precise temperature control directly impacts the growth and development of seedlings. Serpentine-finned tubes, a common heat exchange device, have their temperature regulation stability affected by multiple factors. By increasing the contact area between the fins and the air, serpentine-finned tubes efficiently absorb or release heat, thereby regulating the greenhouse temperature. Their serpentine structure extends the heat transfer path within a limited space, increasing heat exchange time and, to a certain extent, helping to improve temperature uniformity.
Related Product
Finned Tube Coil FAQs
A: Finned tube coil production line 2.
A: We can provide finned tube coil samples for free.
A: After you confirm finned tube coil sample details, the samples will be ready for delivery in 3-7days,and will be sent to you via express and arrive in 3-5days.
A: Finned tube coil can be customized, we can make the new thermoforming or extruding mode based on your drawings and we can sign a confidentiality agreement about your patented product, pls contact us for any further information.
A: Always a pre-production sample,before mass production;always final inspection before shipment.
Inspection & Guarantee Certificate is supplied with shipment, and the Third Party Inspection is available.