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Zhejiang Jingliang Copper-Tube Products Co., Ltd

Wholesale Fin Tube (High/Low)

Fin Tube (High/Low)

-- Steady & Reliable Manufacturer --

Maximizing External Surface Area for Ultimate Thermal Exchange

Fin tubes, categorized into high-fin and low-fin variants, represent the pinnacle of extended-surface heat transfer technology. At Zhejiang Jingliang, we manufacture these tubes by cold-rolling the exterior of a plain copper tube to "extrude" fins directly from the parent metal. This "integral finning" process ensures there is no thermal resistance between the tube wall and the fins, which is a common failure point in "tension-wrapped" or "welded-fin" alternatives. Low-fin tubes typically feature 19 to 40 fins per inch with heights under 1.5mm, designed specifically for shell-and-tube heat exchangers where the external fluid has a lower heat transfer coefficient than the internal fluid. High-fin tubes, on the other hand, feature much taller fins and are primarily used in air-cooled applications where the surface area must be drastically increased to compensate for the poor thermal properties of air compared to liquids.

The engineering logic behind fin tubes is rooted in the "efficiency of space." By increasing the external surface area by 2 to 10 times, a much smaller heat exchanger can achieve the same thermal duty as a large, bulky smooth-tube unit. Our production line uses high-precision rolling stands that maintain the structural integrity of the "root" of the fin, ensuring the tube can still withstand high internal pressures. We offer these in C12200 copper, as well as copper-nickel alloys for marine environments. For high-fin applications, we also provide "bimetallic" options where aluminum fins are rolled onto a copper base tube. Every meter of our finned tubing undergoes rigorous dimensional checks, including fin pitch, fin height, and wall thickness under the fin (the "root diameter"), ensuring that your thermal calculations translate perfectly into real-world performance.

Fin Geometry & Thermal Parameters

FeatureLow-Fin SpecificationHigh-Fin Specification
Fin Density19, 26, 32, 40 FPI (Fins Per Inch)7, 9, 11 FPI
Fin Height0.5mm - 1.5mm3.0mm - 15.0mm
Base Tube OD12.7mm - 25.4mm15.88mm - 38.1mm
Surface Area Ratio2x to 4x (vs. plain tube)5x to 12x (vs. plain tube)
Material GradeC12200 / C70600C12200 / Aluminum-Copper
Wall under Fin≥ 0.6mm≥ 0.9mm
Thermal EfficiencyIntegral (No contact loss)Integral or Tension-wound
StandardASTM B359 / ASME SB359ASTM A1012 / Custom
TestingEddy Current & Hydrostatic100% Visual & Dimensional

Oil Refineries, Air Coolers, and Power Systems

Low-fin copper tubes are the industry standard for "Shell and Tube Heat Exchangers" in the petrochemical and HVAC sectors, particularly in chillers where the refrigerant evaporates on the shell side. High-fin tubes are extensively used in "Air-Cooled Heat Exchangers" (Fin-Fans) for cooling engine oil, compressed air, or process steam in remote areas where water cooling is unavailable. They are critical in "Dry Cooling Towers" for power plants and "Charge Air Coolers" for large marine diesel engines. In the renewable energy sector, they are used in "Geothermal Evaporators" and "Waste Heat Recovery" systems (ORC cycles) to capture energy from low-temperature exhaust gases. Additionally, they are found in "Oil Coolers" for hydraulic machinery and "Steam Radiators" for industrial space heating, where the tall fins allow for massive heat rejection in a compact airflow path.

Compact Design and Lifetime Thermal Integrity

The primary advantage of integral fin tubes is "Zero Thermal Contact Resistance," as the fins are part of the tube itself and cannot loosen due to thermal cycling. This leads to "Consistent Performance" over decades of operation. The "Reduced Equipment Footprint" is a massive benefit; using finned tubes allows for smaller, lighter heat exchangers, which "Lower Structural Support Costs" and save valuable space on offshore rigs or in mechanical rooms. Our tubes offer "Superior Fouling Resistance" compared to wrapped fins, as the smooth rolled transitions are easier to clean with high-pressure water. The "Enhanced Mechanical Strength" provided by the finning process acts as a reinforcement, allowing the tube to resist vibration better than plain tubes. Furthermore, the "Increased Heat Transfer Coefficient" significantly reduces the "Mean Temperature Difference" (MTD) required, making the entire thermal cycle more energy-efficient and reducing the carbon footprint of the facility.

Specialized Packaging for Fin Protection

Fins are delicate and can be easily crushed. We ship fin tubes in "Custom-Built Wooden Crates" with individual plastic or foam separators for every single tube to ensure no fin-to-fin contact occurs during transit. Payment is 30% T/T and 70% L/C at sight. We provide "Fin Geometry Verification Reports" and "Mill Test Certificates" for every order. Shipping is via Ningbo Port, with specific "Fragile" handling instructions. For long tubes (up to 12 meters), we use reinforced steel-frame crates to prevent sagging. Our logistics team is expert in ensuring that your high-performance tubing arrives with the fins in pristine, factory-rolled condition.

  • Q: Can I get "Unfinned" (Plain) ends on the tubes?
  • A: Yes, we provide custom plain sections at the ends (and even in the middle) for easy insertion into tube sheets and support baffles.
  • Q: How do I clean integral fin tubes?
  • A: High-pressure water jetting or chemical cleaning is generally effective. Because the fins are integral, they are much more durable during the cleaning process than wrapped fins.
ABOUT US
30+YEARS OF
EXPERIENCE
About Us

A Reliable Partner of the Copper Tube Industry

Zhejiang Jingliang Copper-Tube Products Co., Ltd is China Fin Tube (High/Low) and Fin Tube (High/Low) Factory, which established in 1994, has been deeply involved in the copper tube industry for over three decades. The company primarily produce various specifications of products such as copper tubes, brass tubes, copper square tubes, fin copper tubes, copper capillary tubes, condenser copper tubes, copper evaporator tubes, and conductive rods, which are of quality and have earned the trust and acclaim of customers both domestically and internationally.

Wide Applications:

These products are widely used in various fields including air conditioning, refrigeration, heat exchange, sanitary ware, automotive, machinery, electric furnaces, and chemical industries.

Convenient Transportation:

Strategically located in Tangpu Town, renowned as the “home of copper tubes” in East China. Our company enjoys a prime location, adjacent to the Shangsan Expressway and National Highway 104, and is conveniently situated just over 70 kilometers from Hangzhou and Ningbo, ensuring easy accessibility and a business position.

Strong Financial Resources:

With its strong financial resources and advanced copper tube processing technology, our company holds an advantageous position in market share, brand value, technological content, and product quality, becoming a preferred supplier for many listed groups.

Large Scale Production:

The company occupies an area of over 20,000 square meters, with a construction area of 12,800 square meters. In 2022, our annual production exceeded 7,500 tons, with a value output of up to 450 million yuan, demonstrating our strong production capacity and market competitiveness.

Comprehensive Industry Chain:

Jingliang has now developed into a complete industrial chain integrating smelting, extrusion, drawing, precision rolling, and annealing. It has been awarded multiple honors, including "Top Ten Copper Tube Enterprises" and "Leading Taxpayer in the Copper Tube Industry".

Smart Manufacturing:

Jingliang Copper-Tube Products will better integrate the concept of factory construction into its corporate development strategy, insist on refining technology and polishing products more finely, and the future of "intelligent manufacturing".

Genuine Cooperation:

Zhejiang Jingliang Copper-Tube Products Co.,Ltd warmly welcomes friends from all walks of life to visit and offer guidance. We look forward to joining hands with you to create a brilliant future together.

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