What is Finned Tube?
Finned tube is a type of heat exchange components. It is a type of heat exchange tube that aims to improve heat transfer efficiency by adding fins to the surface of the heat exchange tube to increase its outer surface area (or inner surface area).
Key Characteristics and Type
-
Shape and Materials:Finned tubes come in various shapes such as round, oval, and flat tubes. The fins can be made from aluminum, copper, or carbon steel, depending on the application requirements.
-
Fin Attachment Methods:Some finned tubes have fins embedded into grooves on the tube surface (G-type finned tubes), which provide strong mechanical resistance and are suitable for high-temperature applications up to around 400°C. Others have fins formed integrally from the tube material (e.g., T-finned tubes) or attached by brazing or soldering.
-
Fin Profiles:The fin profile (height, thickness, pitch) affects thermal performance and pressure drop. Larger and tighter fins improve heat transfer but may increase pressure drop, requiring a balance for optimal performance
Product By Processing Technology
Extruded finned tube is a finned tube made by extrusion process. The design of this finned tube is unique, with fins tightly attached to the tube wall, forming an efficient heat dissipation surface.
HF welding of spiral finned tubes is achieved by using the skin effect of high-frequency current to heat the steel strip and the outer surface of the steel tube while winding it around the steel strip.
Embedded Finned Tube also called G finned tube ,which pre-process groove onto the surface of base tube,then aluminium strip will be winded on tube.
Aluminum or copper fins are folded into an L shape and continuously spiral wound around the outer surface of the base tube under tension.Overlapped footed “LL” Type is also available.
The outer surface of the base tube needs to undergo a rolling process; After the fins are wrapped, the root of the fins attached to the tube will also be rolled to enhance the bonding between the tube and the fins
Low finned tubes in copper and copper alloys as well as carbon steel, stainless steel and titanium,take as enhanced condenser tubes or evaporators tubes
Product By Shape of Fins
-
Spiral serrated finned tube is formed by spiral winding and pressing serrated fins on the base tube
-
Low finned tubes are generally machined to form ribs of a certain height, spacing, and thickness on the outer surface of the tube
-
Internal grooved tube refers to several spiral grooves machined on the inner wall of the tube, which appear as rectangular grooves in cross-section
-
Forming ripples by extruding on the surface of steel tubes with material carbon steel,stainless steel,titanium etc
-
This kind of finned tube utilizes an elliptical shaped tube with an efficient rectangular shape fins to minimize air−side flow resistance
Customized Finned Tube
We can produce different types of finned tubes based on customers’ drawings, and choose different tube materials grade and fins materials according to the diversified usage environment.
Main Application
-
Air coolers and condensers in power plants and industrial facilities
-
Oil coolers and gas coolers
-
Radiators and heat recovery systems
-
Dry air coolers where water availability is limited or water quality is poor
-
Hydro power generator coolers and other specialized machinery cooling
Company Advantage
Our factory has most advanced machines to make quality low finned tubes such as condenser tube,evaporator tube with inner groove,high finned tube such as extruded type,footed “L” type,overlapped footed “LL” type,Knurled “KL” type,Embedded “G” type etc.
Related Product
We can discuss more on technical details such as finned tube heat exchanger
No matter what technical issues you have, our staff team will communicate with you as soon as possible and ultimately reach the best quotation solution for you.
-
Increased Heat Transfer Surface Area:Fins multiply the effective surface area, enabling significantly higher heat transfer coefficients compared to smooth tubes—sometimes up to 18 times more surface area.
-
Compact and Efficient Heat Exchagners:The enhanced surface area allows for more compact, lighter, and more efficient heat exchanger designs, saving space and material costs.
-
High Pressure and Temperature Resistance:Certain finned tubes, especially those with embedded fins, can withstand high pressures and temperatures, making them suitable for demanding industrial environments such as power plants, chemical industries, and petroleum processing.
-
Versatility:Finned tubes are especially useful in air heat exchangers where heat transfer between a liquid and a gas occurs, and the heat transfer coefficient on the air side is low. The fins compensate for this by increasing the contact surface area.
We want to be your complete source for finned tube products. We work to provide solutions that help our customers succeed. Acree is also able to help develop new type of products in cooperation with you. And in the rare case that we are not the best source, we will help point you in the right direction.
We focus on finned tube manufacturing ,however, we do not currently offer certified engineering services. Our team is happy to make suggestions, but the responsibility of design lies with the customer. We committ to giving you any practical knowledge, experiencial observations, or reccomended outside engineering standands and services that would be benificial to the situation.
Normally we can give an offer base on information such as a dimensional sketch or product characterists . You may also get quote base on a picture,please note that when a quote like this is given we reserve the right to adjust pricing if unkown information is revealed later.