Serpentine U Bend Finned Tube Manufacturer and Supplier Factory 20 Years
Serpentine U Bend Finned Tube is a high-efficiency heat transfer element that combines a curved tube with fins. It is primarily used for industrial heat dissipation and heat energy conversion. Its structural features include:
Serpentine U Bend Finned Tube Structural Features
The tube is curved in a serpentine or helical shape, with 180° or 90° bends forming a continuous path. This causes the flowing medium to constantly change direction, creating a turbulent effect.
Heat Transfer Principle of Serpentine U Bend Finned Tube
Turbulence Enhancement: The curved structure creates more turbulent flow, increasing the friction coefficient by over 40% and improving heat transfer efficiency by 35% compared to straight tubes.
Fin Synergy: The spiral fins are wrapped around the tube with a pitch of 0.5-2mm, increasing the heat dissipation area by 5-8 times compared to ordinary plain tubes. The variable pitch design at the bends compensates for any heat loss.
Quality Control for Serpentine U Bend Finned Tube
The quality of the serpentine U bend finned tube is assured by hydrostatic or pneumatic testing, eddy current testing and tensile testing to verify the mechanical bond between the inner tube and the outer fins.
Delivery condition:
Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of serpentine U bend finned tube.
Here’s the complete English version of your table with all columns translated:
Manufacturing Processes of Serpentine Finned Tubes
| Process Name | Technical Characteristics | Applicable Materials |
|---|---|---|
| High-Frequency Welding Bend Finned Tube | Metallurgical bonding of fins to base tube via electromagnetic induction, with >99% weld adhesion rate | Stainless steel, Carbon steel |
| L LL KL KML G Type Bend Finned Tube | Mechanically wound fins with spiral shape to enhance turbulence effect | Copper, Aluminum |
| Extruded Type Bend Finned Tube | One-piece forming of fins and tube without welds, but higher mold costs | Aluminum, Copper alloys |
| Laser Welding Bend Finned Tube | High precision, minimal heat-affected zone, suitable for thin-walled tubes and fine fin spacing | Stainless steel, Titanium alloy |
Serpentine U Bend Finned Tube 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.
The serpentine laser welded fin tube is a high-efficiency heat exchange element that combines a serpentine structure design with a laser welding process.
Longitudinal welded U bending finned tube adopts high frequency welding technology to weld the fins and tubes in parallel and bend them into the arc required by customers.
The low fins are machined on the outer surface of the light tube through mechanical rolling process, and the base tube is bent into a U shape.
It consists of H-shaped fins (a curved structure symmetrical on both sides) and a base tube, and is processed by a bending machine to form a flexible curved shape.
A metal processing process that uses mechanical principles to cause plastic deformation of steel pipes at specific locations to achieve the desired bending angle and shape.
Weld the stud onto the base tube, and then fold the fin tube into a certain arc according to customer requirements.
Serpentine U Bend Finned Tube by Material
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SA179 SA192 Carbon Steel Serpentine U Bend Finned Tube -
304 316 Stainless Steel Serpentine U Bend Finned Tube -
U Bend Copper Finned Tube -
Alloy Steel U Bend Finned Tube
Features of Our Serpentine U Bend Finned Tube
1. High heat transfer performance and low contact thermal resistance.
2. Large contact area between fins and tubes, tight and reliable fit.
3. Good resistance to atmospheric corrosion, stable for long-term use.
4. Can be used under high temperature for a long time.
Customizable Serpentine U Bend Finned Tube
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.
Serpentine U Bend 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
Serpentine U Bend Finned Tube Quality Checks
Each of our Serpentine U Bend 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.
Serpentine U Bend Finned Tube Application
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.
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Serpentine U Bend Finned Tube FAQs
A: Serpentine U bend finned tube production line 2.
A: We can provide bend fin tube samples for free.
A: After you confirm bend fin tube 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: U bend fin tube 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.