At Cangzhou Datang Steel Pipe Co., Ltd., we present a diverse range of finned tubes, each meticulously designed to elevate your heat transfer systems. Our selection includes tension wound finned tubes, embedded finned tubes, and extruded finned tubes.
Our tension wound finned tubes are expertly crafted by tightly winding a strip, composed of premium aluminum or copper, around the tube under precise tension. The advanced strip winding technology unlocks a variety of fin designs, including the L-Fin, LL-Fin, and KL-Fin, each tailored to meet specific performance requirements.
Embedded fins (G-Fins) are ingeniously manufactured by embedding an aluminum or copper strip within a helical groove, artfully machined on the tube's exterior surface.
These finned tubes, spanning tension wound, embedded, and extruded types, are quintessential in air cooler systems and find common usage across various fields, such as:
Heat exchangers in power plants of all kinds, including electric, nuclear, thermal, and geothermal facilities
Applications in steam condensate systems
Vital roles in the chemical and petrochemical industries
Essential technology for food processing plants and refrigeration systems
Crucial industrial applications including steel mills, incinerators, and gas compression facilities

L-Foot Finned Tube
Renowned for its high efficiency and cost-effectiveness, the L-footed finned tubing provides exceptional heat transfer capabilities at lower temperatures. This distinctive L-shaped design ensures fins remain steadfast against heat cycling and high-velocity air vibrations.
The L-Foot Finned Tube series also offers several variations, enhancing its versatility:
Knurled Fin - A specialized interference fit fin, featuring mechanical knurling that firmly bonds the fin material to the tube wall, enhancing stability.
LL Fin - The Double Overlap Fin (or double LL) offers superior coverage with a dual strip thickness enveloping the entire base tube.
Perforated L Fin - This innovative design introduces 'tear drop' slits along the helix, effectively disrupting airflow for enhanced performance.
L-Foot Fin / Wrap-On Fin
L-Foot Tension Wound Finned Tubes also known as Wrap-On Finned Tubes, are ideal for low-temperature applications not exceeding 300 degrees Fahrenheit, requiring some level of tube wall protection. Crafted with precision, these L-Foot tension wound finned tubes consist of thin aluminum fin strips tightly helically wrapped around the tube. The 'foot' is initially formed on one side of the fin strip, giving it the iconic L-Foot name. Subsequently, the strip is wound securely around the tube, with the fin's foot bearing firmly against the tube's external surface. Each L's short horizontal limb makes complete contact with the base-tube surface, ensuring full coverage. The fin strip's tension as it wraps around the tube enhances the seating of the fin foot and maintains the fin's firm position. L-footed finned tubing is the epitome of efficient heat transfer excellence at reduced temperatures. Its unique L-shaped architecture maintains fin rigidity, capable of withstanding both heat cycling and high-velocity air vibrations. Additionally, this fin design offers atmospheric protection for the tube wall, safeguarding against corrosion. Its broad contact surface between the tube and finning significantly boosts heat transfer efficiency. This design is celebrated for being highly efficient while remaining cost-effective.
Fin ends are meticulously stapled to prevent unraveling, ensuring the aluminum fin maintains contact with the tube surface. This integral element is pivotal to the functionality of the air cooler, as the essential heat exchange occurs by seamlessly transferring heat from the tube wall, passing through the fin, and dispersing it into the surrounding ambient air.
Advantages:
Tailored for low-temperature applications, ensuring optimal performance and efficiency.
This finning type stands out as the most cost-effective method available, offering exceptional value compared to alternative options.
One of its remarkable features is the ease with which failed fins can be removed during production. This allows the same bare tube to be reused for subsequent finning, enhancing sustainability and reducing costs.
The innovative design eliminates the necessity of creating a helical groove over the core tube, simplifying the production process.
Fins can be effortlessly mounted on a very thin-walled tube, a highly desirable feature, especially when costly alloys serve as the core tube material.
Designed to withstand temperatures soaring up to 130°C, the tube is safeguarded against atmospheric corrosion and thermal stress, ensuring long-lasting durability.
Application:
Oil and gas refineries benefit greatly from these advanced finned tubes.
Widely utilized in petroleum, chemical, and petrochemical industries for enhanced heat transfer.
Effective in natural gas treatment processes where superior heat management is crucial.
Essential in the steel-making industry for efficient thermal regulation.
Integral to power plants, ensuring efficient energy transfer and cooling.
Vital in air conditioning systems for optimal climate control performance.
Used in compressor coolers, offering reliable and efficient cooling solutions.
KL Footed Fin / Knurled L Footed Fin
The KL fin is commonly referred to as the knurled L fin, showcasing its unique design attributes. This finned tube bears a strong resemblance to the Wrap-On fin, utilizing both Wrap-On and Embedded techniques for superior performance. Crafted from strips prepared into an L shape similar to the L type, these fins are rolled into a taper, enabling them to curl elegantly around the tube. Under tension, the fin is helically wound onto the tube in a continuous loop, ensuring a secure and consistent application. The fin embraces the tube, providing an intimate bond that enhances heat transfer. A specialized spinning tool knurls the base tube, allowing the fin's foot to integrate seamlessly with the knurling, creating a tight bond for improved thermal efficiency.
Employing the right fin strip ensures that each fin's foot seamlessly interlocks with the next, eliminating gaps and enhancing protection. This effectively shields the tube from corrosion, extending its lifespan and performance. Similar to L fins, these fins are securely bonded at each end, preventing any unwinding during operation. Typically employed in metal-related applications, KL-Foot tension wound finned tubes offer unmatched durability and heat management. Capable of withstanding a maximum operating temperature of up to 320°C (608°F), ensuring reliability in high-heat environments.
Advantages:
Developed using corrosion-resistant tubes, ensuring longevity and minimal maintenance.
Exhibiting remarkable vibration resistance, these tubes maintain integrity under dynamic conditions.
Endures temperatures soaring up to 320°C (608°F), showcasing exceptional thermal resilience.
Combines high thermal performance and stress resistance with unparalleled protection from air corrosion, offering a unique advantage.
KL finned tubes can be effortlessly substituted for any form of finned tube, offering versatile and adaptable solutions.
LL-Foot Fin / Overlapped L
Derived from strips akin to the L type, the fins feature a meticulously stepped double L shape, rolled into a taper for efficient integration. The LL-Foot Fin - Overlapped L is then helically coiled onto a tube under tension, ensuring a secure and durable fit. The fin clings tightly to the tube, with one fin overhanging the next, ensuring complete coverage and protection of the base tube. This comprehensive coverage effectively shields the tube from corrosion, ensuring long-term durability and reliability. In challenging corrosive environments, this innovative tube serves as a cost-effective alternative to the pricier extruded fin types, providing exceptional performance and reliability.
Ingeniously designed, the fins are securely fastened at both ends following the same reliable method as L fins, ensuring stability and efficiency. The highly resilient LL-type fin tube is expertly engineered to withstand temperatures soaring up to 350 degrees Fahrenheit (177°C), offering superior durability and thermal performance.
parameters
PRODUCT |
TYPE |
TUBE MATERIAL |
FIN MATERIAL |
TUBE SIZE |
FIN SIZE |
Heat Exchanger Finned Tube |
Extruded Fin Tube |
All Kind of Material can be applied |
Aluminum A1100 |
15.88~50.8 |
7~11.5FPI |
Fin Height Max 16mmH |
L,LL,KL-Foot Fin Tube |
All Kind of Material can be applied |
Copper C1100, C1220... |
12.70~50.8 |
2.3~11.5FPI |
Wrap Around Finned Tube |
Fin Height Max 16mmH |
G-Fin Tube (Embedded Type) |
Aluminum A1100, A1050, A1060... |
|
High Frequency Welded Fin Tube |
A179 Carbon Steel Tube |
Carbon Steel Tube |
12.70~160 |
1.5~7FPI |
Stainless Steel Tube |
Stainless Steel Tube |
0.8~3.2mm. Thickness |
Alloy Steel Material |
Alloy Steel Material |
|
Integral Copper & Copper Alloy High Finned Tube |
C12200, C11000, C70600 |
C12200, C11000, C70600 |
15.88~22.23 |
5~9FPI |
Max 12mm. H |
Oval Finned Tube |
Carbon Steel Tube |
Carbon Steel Tube |
All Size Available |
5~15FPI |
Stainless Steel Tube |
Stainless Steel Tube |
Alloy Steel Material |
Alloy Steel Material |
Copper & Copper Alloy Tube |
Copper & Copper Alloy Tube |
Monometallic Fin Tube |
Low Fin Tube |
Carbon Steel, stainless steel, titanium, copper, brass, nickel alloy, etc. |
-- |
9.52~40 |
12, 16, 19 28 FPI, etc. |
Turbo-C Tube |
Turbo-E Tube |
Corrugated Tube |
All Kind of Material |
-- |
6.35~40 |
2~9FPI |
Application
Versatile and efficient, these fin tubes are perfect for a wide array of applications including aftercoolers, air coolers, heaters of all kinds, charge air chillers, condensers, convection heaters, electric heaters, evaporators, fluid and gas coolers, heat pipes, hydrogen coolers, industrial tumble dryers, intercoolers, immersion heaters, oil coolers, radiators, refrigeration systems, solvent recovery operations, and steam to air heat exchangers..







For over 17 remarkable years, DATANG STEEL PIPE Co., Ltd has stood as a distinguished processor and wholesaler, reaching global markets with finesse and expertise.
Discover an expansive and diverse selection of premium Finned tubes, Fin tube heat exchangers, Air coolers, Radiators, Economizers, and Condensers,as well as Vaporizers and Evaporators, all meticulously crafted under the trusted name of Datang.
Our vast inventory is brimming with high-quality carbon steel seamless pipes, ensuring a reliable and immediate supply.We also offer a comprehensive range of ERW pipes, SSAW pipes, and alloy steel pipes, complemented by an array of pipe fittings and flanges.
We warmly invite you to tour our state-of-the-art factory and are eager to establish a fruitful collaboration with you.

With 17 years of dedicated service, DATANG STEEL PIPE Co., Ltd shines as a prominent manufacturer and wholesaler, reaching esteemed global markets.
Our expert sales and technical teams are committed to designing custom solutions that meet your specific needs while providing exceptional product customization.
At Datang, explore our extensive range of cutting-edge Finned tubes, tailored to meet the highest industry standards.
Currently, our production facilities are fully equipped with advanced technology, including:
'G' Type Fin Tube (Embedded Finned Tube), 'L', 'LL', and 'KL' Type Fin Tube (Wrap Around Finned Tube), spanning 6 production lines,
High Frequency Welded Fin Tube (Including Serrated Finned Tube) across 8 lines,
Laser Welding Finned Tube, efficiently produced on 1 line,
and Extruded Finned Tube (Bimetallic Fin Tube & Integral Monometallic Low Fin Tube) utilizing 6 dedicated lines.
We specialize in customizing Fin tube heat exchangers, Air coolers, Radiators, Economizers, Condensers, as well as Vaporizers and Evaporators, crafted to meet precise specifications.
Our extensive spot inventory includes top-tier carbon steel seamless pipes, ensuring immediate availability for manufacturing needs. This includes a selection of ERW pipes, SSAW pipes, and alloy steel pipes, integral for the production of fin tubes.
Additionally, we provide a variety of pipe fittings and flanges, enhancing our comprehensive product offerings.
We encourage you to visit our factory and are enthusiastic about the possibility of collaborating with you to achieve success.
Customer Tour&Cooperation




FAQ
Q1: Are you a factory or trade company?
A1: We are both a factory and a subsidiary international trade company specializing in exports.
Q2: What can you provide?
A2: Our esteemed company specializes in the manufacturing of Radiators, Heat Exchanger Equipment, and a variety of Fin Tubes, delivering unmatched quality.
Q3: Where is your factory?
A3: Proudly located in Cangzhou city, Hebei province, China, our company is equipped with a wide array of advanced machines.
Q4: How do you control quality?
A4: We provide an Inspection & Guarantee Certificate with every shipment, ensuring the highest standards, and offer Third Party Inspection for added assurance.
Q5: What are the advantages of your company?
A5: Boasting a team of seasoned professionals, we offer competitive pricing and superior after-sales service, setting us apart from the competition.
Q6: Can you arrange the shipment?
A6: Absolutely, we facilitate shipping with trusted forwarders who have partnered with us for many years, ensuring smooth delivery.
Q7: How about the delivery time?
A7: Our delivery time is order-dependent, typically within 30 days of receiving your advance payment.
Q8: Can you provide sample?
A8: Yes, we are pleased to offer small samples from our inventory at no cost.
Please contact me for more information today and seize the opportunity to learn more about our exceptional offerings!