Single metal extruded finned tube

Single Metal Extruded Finned Tubes

The base tube and outer fins of the pipe are made of the same metal material. Common materials include aluminum, copper, stainless steel, or carbon steel.

By using a dedicated rolling mill (such as a three-roll skew rolling mill) or mold, tremendous pressure is applied to the metal tube, causing plastic deformation of the tube wall metal and rolling outward to form spiral fins

Typical Technical Parameters

Base tube OD: 12.7 mm - 50.8 mm
Base tube wall thickness: 1.5 mm - 6.0 mm
Fin height: 2 mm - 16 mm
Fin thickness: 0.3 mm - 1.5 mm
Fin pitch: 2 fins/inch to 12 fins/inch
Fin density: 8 - 48 fins per 100 mm
Finning ratio: 5 to 12 times the external surface area of plain tubes
Maximum operating temperature: up to 300°C for aluminum based tubes, higher for steel and titanium depending on material grade
Maximum operating pressure: typically up to 16 MPa depending on design standard and base tube thickness
Tube length: up to 18 meters

Material Options

Aluminum and aluminum alloys are commonly used due to their excellent thermal conductivity and ease of extrusion.
Copper and copper alloys provide superior heat transfer performance and good corrosion resistance.
Carbon steel is suitable for general industrial applications with moderate corrosion conditions.
Stainless steel offers improved corrosion resistance for more aggressive environments.
Titanium and titanium alloys are used in highly corrosive media such as seawater and chemical processing systems.

Performance Characteristics

Zero thermal resistance (extremely high heat transfer efficiency): Because the fins and tubes are integrated, there are no welds, gaps, or contact surfaces between different metals in the middle. Heat can be conducted from the inside of the tube to the tip of the fins without any hindrance, and theoretically, the heat transfer efficiency is the highest.

The structural strength is extremely high: the fins will not fall off or loosen. It can withstand severe thermal shock (hot and cold) and mechanical vibration, making it very suitable for high-pressure, high-temperature, or high vibration environments (such as petrochemicals and high-pressure boilers).

Good corrosion resistance: Due to the absence of welds, the risk of weld corrosion is eliminated. If the aluminum tube is rolled as a whole, anodizing treatment can also be carried out to further enhance its anti-corrosion ability.

Easy to clean: The surface of extruded fins is usually smooth and free of burrs (trapezoidal or arc-shaped), not prone to dust accumulation, and easy to clean with water or chemicals

Applications

Aluminum/copper single metal extruded finned tubes are mainly used for air conditioning condensers, evaporators, and air compressor coolers.

Single metal extruded finned tubes made of stainless steel/carbon steel are mainly used in petrochemical heaters, boiler economizers, and high-pressure heat exchangers

FAQ：

1. Are you manufacturer or trader?

We are titanium tube manufacturer producing from melting titanium sponge, extruding hollow billet, rolling to finished tubes and destructive test mechanical test, chemical analysis, non-destructive tests like Ultrasonic test, Eddy current test, Pneumatic test and hydrostatic test are available in house.

Beside titanium tube production line, we also have finning lines. Our factory is still expanding and will invest more on finning facilities.

2. How many workers are there in your factory?

Till 2026, we have 210 staffs.

3. How fast can you deliver the materials?

It depends on the size and quantity, the standard time is 45 days.

4. What is the payment term you can offer?

Standard term is 30% T/T in advance, balance before shipment. L/C is also acceptable. It can be discussed based on different project.

5. Can you provide third party inspection service?

Yes, we can arrange BV/TUV/SGS/LR etc inspection. EN10204 3.2 certificate can be provided.

6. What is your annum turnover?

For 2025, we have had 100 million US dollars turnover for our whole group including factory and the export company.

7. What is the percentage of your export and domestic market share?

Approximately 30% of orders are for export and 70% are for domestic market. However we are aiming to increase more investment on export and hopefully the percentage can be 50-50 in the near future.

8. What country are your clients from?

We are working with overseas clients from Europe like Netherland, France, Italy, Spain etc, USA, Korea, Japan, Indonesia, Vietnam, Singapore, Chile, Argentina, Brasil, Russia, Belarus, Uzbekstan. Basically we work with clients from all over the world. We welcome every client to approach us for inquiry, and we will be ready to serve our clients. We also welcome our clients to visit our factory for onsite audit.