Stainless Steel Aluminium Extruded High Finned Tube
Stainless steel extruded aluminum high finned tubes are a type of high-efficiency composite heat exchange element, metallurgically bonded to stainless steel base tubes and aluminum fins through an integral extrusion process. They exhibit strong resistance to acids and alkalis and corrosion, while the aluminum fins provide highly efficient heat transfer.
- Tube Material:Stainless steel,Duplex steel
- Tube Diameter:15.88-50.80 mm,Wall Thickness:1.0-3.0 mm
- Fin Material:Aluminum,Cooper,Fin Thickness:0.4-0.5 mm,Fin Pitch:2.1-6.0 mm,Fin Height:6.35-25.4 mm
Stainless Steel Extruded Aluminum High Finned is a high-efficiency heat exchange tube made by extruding stainless steel as the base tube and aluminum as the fins. It is particularly suitable for applications requiring both corrosion resistance and high heat exchange efficiency.
The stainless steel base tube provides strength and corrosion resistance, while the aluminum fins are tightly bonded to the base tube through extrusion, forming a gapless composite structure.
Extruded Finned Tube Process: The aluminum fins are metallurgically bonded to the stainless steel base tube using an integral extrusion process, eliminating weld seams and preventing fin loosening.
Composite metal extruded finned tubes are bimetallic heat exchanger components that combine two dissimilar metals by an extrusion process. Typically, this process involves a base tube (such as carbon steel or stainless steel) and fins made of a more thermally conductive or corrosion-resistant metal (such as aluminum) that are bonded during the manufacturing process.
Stainless Steel Extruded Aluminum High Finned Advantages
(1) High thermal conductivity
Excellent thermal conductivity: The thermal conductivity of aluminum (about 237 W/m·K) is much higher than that of steel (about 50 W/m·K), which can quickly transfer heat from the base tube to the fin surface, significantly improving the overall heat exchange efficiency.
Uniform heat dissipation: The uniform thermal conductivity of aluminum can reduce local hot spots and prevent deformation of the base tube due to excessive temperature gradient.
(2) Lightweight design
Low density: The density of aluminum (2.7 g/cm³) is only 1/3 of that of steel, which is particularly suitable for weight-sensitive applications (such as air coolers and vehicle-mounted heat exchange systems), reducing structural support costs.
(3) Corrosion resistance
Natural oxidation protection: A dense oxide film (Al₂O₃) is easily formed on the surface of aluminum, which resists corrosion from the atmosphere, water vapor and weak acid environments, extending service life.
Salt spray resistance: It performs better than ordinary carbon steel in marine or coastal environments and is suitable for condensers and seawater desalination equipment.
(4) Economical
Controllable costs: The price of aluminum is lower than that of copper and stainless steel, and the processing energy consumption is low, with obvious comprehensive cost advantages.
Low maintenance cost: The corrosion resistance reduces the need for coating or replacement.
If you require a specific model, we recommend providing your specific operating conditions (such as operating temperature, pressure, and medium) directly to the supplier and contacting us to obtain the most suitable customized product solution.
Applications of Extruded Finned Tubes
Stainless steel aluminum extruded high-finned tubes are widely used in hot air heating, waste heat recovery, and drying equipment in industries such as chemical, metallurgy, food, and pharmaceuticals, as well as in condensers and evaporators in HVAC systems. They perform particularly well in high-temperature, dusty, or highly corrosive environments, such as boiler cooling and metallurgical equipment.
How to Choose Extruded Finned Tubes?
When purchasing, the stainless steel material (304 is suitable for general corrosion, 316L is suitable for highly corrosive environments) should be selected based on specific operating conditions (such as media corrosivity, temperature, and pressure). Parameters such as tube diameter, wall thickness, and fin height/spacing should be specified to support customization. It is recommended to prioritize suppliers who provide material reports and pressure tests to ensure product quality and long-term reliability.
RFQ
1.Inquiry SA-789 Seamless Extruded High Finned Tube Auminium 1060 Fin —— January 26, 2026
- Datasheet
- Drawing
- Certificates
| Extruded aluminum fin tube size and material | ||
| Tube OD | 10~51 (mm) | 0.4”~2” |
| Tube Wall Thk | 1.65~3.0 (mm) | 0.065”~0.118” |
| Tube Length | ≤18,500 (mm) | ≤60.7 ft |
| Fin Thk | 0.3~1.2 (mm) | 0.012”~0.047” |
| Fin Height | 5~16 (mm) | 0.2”~0.63” |
| Fin Pitch | 100~555 (mm) | 3~14 FPI |
| Fin Type | Extruded | |
| Material Combinations | ||
| Fin Material | Aluminum (most common grade:Alu.1100, Alu.1060, Alu. 6063) | |
| Copper | ||
| Tube Material | C.S. (most common grade: A179, A192,SA210 GrA1/C,A106 Gr B ) | |
| S.S. (most common grade: TP304, 316, 321, 347,A789) | ||
| Copper (most common grade:UNS12200,14200, 70600, CuNi70/30, CuNi 90/10) | ||
| Titanium (most common grade: B338Gr2) | ||
| Applied Temperature | 300°C | |
| Type of Service | Medium temperature, severe atmospheric corrosive environment. | |
Extruded Finnd Tube Machine
The extrusion finned tube machine is a third-generation improved product. It has a compact structure, stable performance, and is easy to operate. It is suitable for rolling various specifications of single and bimetallic finned tubes made of steel, steel-aluminum, pure aluminum, copper-aluminum, copper, etc.
Fin outer diameter range: Φ18–Φ70 mm
Extruded Aluminum Finned Tubes Appearance Dimension Inspection
Extruded aluminum finned tubes appearance dimension inspection is one of the important links to ensure the quality and performance of fin tubes.
The inspection items mainly include fin height, fin spacing, fin thickness, base tube wall thickness and outer diameter, etc.
Stainless Steel Aluminium Extruded High Finned Tube Bending Processing
Bending of fin tubes is an important step in the production process of extruded finned metallic tubes. Bending is to bend the extruded finned metallic tubes material through specific mechanical equipment to form a suitable curvature to meet different usage requirements.
This step requires strict control of the bending angle and curvature to ensure the fit between the fin and the base tube and the heat dissipation effect.
Stainless Steel Aluminium Extruded High Finned Tube Pull Off Test
Extruded finned metallic tubes pull-off test is a test used to detect whether the fin tube will fall off when subjected to tension, mainly used to ensure the quality and reliability of the fin tube.
Datang’s this test is very important in the production process because the extruded finned metallic tubes will be subjected to various stresses during operation, such as temperature changes and pipe expansion, which may cause the fin to fall off, thereby affecting the performance and safety of the heat exchanger .
Stainless Steel Aluminium Extruded High Finned Tube Packing
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
