Hot-Dip Galvanized Elliptical Finned Tube
Datang produces hot-dip galvanized elliptical finned tubes featuring carbon steel elliptical tubes and carbon steel rectangular fins.The base tubes of elliptical finned tubes are typically manufactured in accordance with the ASTM A179 standard.
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Outside Diameter: 36 x 14 mm
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Fin Height: 26 x 55 mm
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Fin Thickness: 0.4 mm
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Fin Pitch: 3 mm
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Maximum Length: Up to 16 meters
Professional Hot-Dip Galvanized Elliptical Finned Tube Suppliers-Datang
Hot-dip galvanized elliptical finned tubes are high-efficiency, corrosion-resistant heat transfer components featuring an elliptical base tube paired with rectangular outer fins, with the entire assembly processed via hot-dip galvanizing. Compared to standard round finned tubes, they offer higher heat transfer efficiency and lower fluid resistance, making them a cost-effective choice for industrial heat exchange and heating applications.
Hot-Dip Galvanized Elliptical Finned Tubes Specification
| Category | Parameter | Specification / Requirement |
| General | Standard | ASTM A179 |
| Surface Finish | Hot-Dip Galvanized | |
| Base Tube | Tube Material | Carbon Steel |
| Tube Type | Seamless and Elliptical | |
| Outside Diameter | 36mm × 14mm | |
| Wall Thickness | 2.11mm | |
| Length | 16000mm | |
| Bare Ends | 25mm + 25mm | |
| Fin | Fin Material | Carbon Steel |
| Fin Type | Rectangular fins | |
| Fin Thickness | 0.4mm | |
| Fin Height | 55mm × 26mm | |
| Fin Pitch | 9FPI | |
| Chemical Composition (%) | C | 0.06 – 0.18 |
| Mn | 0.27 – 0.63 | |
| P (max) | 0.035 | |
| S (max) | 0.035 |
Datang provides fixed-size hot-dip galvanized elliptical finned tubes featuring an outside diameter of 36 x 14 mm, a fin height of 55 x 26 mm, a fin thickness of 0.4 mm, a fin pitch of 3 mm, and a maximum length of up to 16 meters. Tube wall thickness, tube length, fin pitch, and bare ends can all be customized according to customer requirements. If you have any inquiries, please feel free to contact us at any time.
Hot-Dip Galvanized Elliptical Finned Tube Materials
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Base Tube & Fins: Both the inner base tube and the outer fins are made of carbon steel, providing high structural strength and excellent pressure resistance.
Elliptical Finned Tube Surface Treatment
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Galvanized Protective Layer: The hot-dip galvanizing process forms a high-purity zinc coating with a thickness of 80–120 μm. Utilizing the principle of sacrificial anode protection, it actively guards the internal carbon steel, offering 3 to 5 times the corrosion resistance of non-galvanized finned tubes.
Datang’s Production Capacity
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Fin-Assembling Process: Rectangular fins are threaded onto the elliptical steel tubes. This process boasts high production efficiency, with a single production line achieving a daily capacity of 500–800 meters.
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Integral Hot-Dip Galvanizing: After assembly, the finned tube is entirely immersed in a molten zinc bath at around 450°C, forming a complete and uniform protective zinc layer.
Hot-Dip Galvanized Elliptical Finned Tube Key Advantages
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High Heat Transfer Efficiency: The elliptical tube geometry significantly reduces the recirculation zone behind the tube, decreasing air-side flow resistance. The heat dissipation area of a single finned tube is 4 to 7 times that of a bare tube, ensuring more efficient heat transfer.
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Long Service Life: The external galvanizing defends against moisture and mild dust corrosion, offering a salt spray resistance of 500–800 hours. Under standard operating conditions, its service life can reach 8–12 years.
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High Adaptability: It supports various connection methods, such as flanged and threaded connections, and can be installed on floors or wall-mounted. It accommodates multiple thermal media, including medium- to low-pressure steam and hot water.
Hot-Dip Galvanized Oval Finned Tube Elliptical Tube with Rectangular Fins Applications
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Industrial Sector: Heat exchange systems in ethylene and refining plants, power plant boilers, as well as evaporators and condensers in central air conditioning units.
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Civil & Agricultural Sectors: Heating for industrial plants, greenhouses, and heat dissipation in humid workshops.
Composition of Hot-dip Galvanized Elliptical Finned Tubes
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Elliptical Seamless Steel TubeManufactured from high-grade seamless steel tubes to serve as the primary fluid channel. Featuring a larger perimeter than conventional round tubes, the elliptical geometry maximizes primary heat transfer area. Its aerodynamic, streamlined design significantly minimizes fluid drag, reducing air-side resistance by 30% to 50% for lower energy consumption and quieter fan operation.
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Rectangular Fins(Carbon Steel)Precision-stamped from premium carbon steel strip and tightly fitted or wrapped onto the base tube’s outer wall. These rectangular fins dramatically expand the extended heat exchange surface by 8 to 15 times, substantially enhancing convective heat transfer efficiency and boosting overall thermal performance in heavy-duty industrial drying operations.
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Hot-Dip Galvanized CoatingApplied by fully immersing the assembled finned tube into a 450°C molten zinc bath to form a robust, integrated protective layer. This complete zinc coating offers exceptional corrosion resistance in humid or acidic environments, while permanently bonding the fins to the tube to eliminate contact thermal resistance and create a unified, high-efficiency heating element.
Advanced Fin Tube Machinery for Guaranteed Capacity
The Datang Automatic Elliptical Tube Rectangular Finned Tube Manufacturing Equipment is specially engineered for the high-efficiency production of elliptical tubes equipped with rectangular steel fins. Utilizing a mechanical fin-fitting method, the machine feeds pre-stamped rectangular fins individually onto the elliptical base tube, which are subsequently secured and bonded through a hot-dip galvanizing process to suit industrial applications with demanding anti-corrosion requirements. Featuring automated strip feeding, precision fin punching, and exact fin-to-tube positioning, this production line ensures outstanding pitch consistency and high surface contact. Built to Datang’s rigorous industrial standards, this equipment provides global heat exchanger manufacturers with a reliable, continuous, and automated manufacturing solution for demanding thermal processing applications.
Customizable Elliptical Finned Tube
Datang Customizable Elliptical Finned Tubes are premium heat transfer components engineered to meet strict technical specifications across industrial drying, petrochemical, and power generation sectors. Combining low-drag aerodynamic base tubes with high-density rectangular or elliptical fins, Datang provides comprehensive custom manufacturing—including base tube wall thickness, fin height, fin spacing (pitch), and length. Whether hot-dip galvanized for extreme humidity resistance or manufactured from specialized alloys, Datang delivers tailored solutions that optimize heat exchange efficiency, lower pressure drop, and extend service life.
Elliptical Finned Tube 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
Elliptical Finned Tube Quality Checks
Each of our elliptical finned tube 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.
Hot Dipped Galvanized Elliptical Finned Tube Application
Suitable for industrial drying rooms across timber, agricultural, and chemical processing industries—including timber drying kilns, molded pulp drying tunnel furnaces, starch flash dryers, and drying rooms for traditional Chinese medicine and food processing (e.g., preserved fruits). The overall hot-dip galvanizing process eliminates contact thermal resistance between fins and tube, ensuring rapid heating and uniform temperature distribution. The protective galvanized coating offers superior resistance to high-humidity corrosion, preventing rust and delivering a long service life of 10 to 20 years in severe drying environments.
The convection chamber of the heating furnace in the petrochemical industry is used in the elliptical finned tube,which can increase the heat transfer coefficient on the gas side, and the area of the elliptical tube is 2 to 3 times that of the straight tube. Due to the application of Elliptical Finned Tube, in the design of this case, the same radiation intensity can get the same thermal intensity.It uses winding technology, ranging from stable, segmented combination and firm, to surface galvanized and nickel-based brazing, depending on the application. has a high heat transfer efficiency, while the wind side has a small.Compared with the section of the circular tube, the heat transfer coefficient can be increased by 25%, and the air resistance can be reduced by 15%-25%.
Industrial dry heat exchanger, due to its high efficiency heat exchange and corrosion resistance, hot dip galvanized oval fin tubes perform well in industrial dry heat exchangers, can quickly respond to system temperature changes and maintain a stable heat dissipation effect.
The galvanized oval finned tube heat exchanger is a highly efficient heat exchange device specially designed for the food drying process. Its core working principle is to greatly increase the heat exchange area through the special structure of the oval finned tube, thereby improving the heat exchange efficiency. The fin shape of the oval finned tube can increase the heat transfer area of the pipe, making the heat exchange efficiency higher.
ASTM SA179 SEAMLESS FINNED TUBE 5/8″ x 1 3/4″ x 404 1/16″
(BWG 14) ELLIPTICAL FOR AIR-COOLED CONDENSER. FINS
ANCHORED BY THERMOFUSION.
TUBE IS AVAILABLE IN ELLIPTICAL OR ROUND SECTION.
TUBE DESCRIPTION:
TUBE OD (max): 1-3/4″ (44.45 mm)
TUBE OD (min): 5/8″ (15.875 mm)
TUBE wall thickness: 2.11 mm
TUBE length: 404 1/16″ (10263 mm)
TUBE material: ASTM SA179
Fin Thickness: 0.508 mm
10 Fins Per inch (pitch) 2.54mm)
Fin height: 33mm x Fin width: 66mm
Fin length: 10063mm
Bare length at both ends: 100mm/100mm
Fin Material: Aluminum 1060
Quantity: 244 finned tubes
Please provide a quote for the elliptical finned tubes or the complete radiator
I have attached a drawing of a water-air steam radiator. Please provide a quote for the finned tubes or the complete radiator.
1. With SS316L BWG 14 tubes, 0.5 mm 1060 aluminum fins, 19 fins per inch, and 150 class carbon steel grates, nozzles, and flanges;
2. With A179 BWG 14 carbon steel tubes.
I look forward to your prompt reply.
Related Product
Elliptical Finned Tube FAQs
A: Elliptical finned tube production line 2.
A: We can provide hot dipped galvanized elliptical finned tube samples for free.
A: After you confirm hot dipped galvanized oval fin tubes 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: Elliptical tube with rectangular fins 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.