ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube
ASTM A179 tube aluminum fin composited extruded fin tube is a high-efficiency heat transfer tube that combines aluminum fins with a base tube through a cold rolling process. ASTM A179 is a seamless cold-drawn low-carbon steel tube used in heat exchangers and condensers.
- Tube Material:Carbon steel,Stainless 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
What is an ASTM A179 tube?
Standard: Conforms to ASTM A179/ASME SA-179 standards, suitable for tubular heat exchangers, condensers, and other heat transfer equipment.
Material: Seamless cold-drawn low-carbon steel, carbon content 0.06%~0.18%, tensile strength ≥325MPa.
Applications: Primarily used in high-temperature (≤300°C) and high-pressure environments, such as industrial heat exchange systems.
What is an ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube?
An ASTM A179 steel-aluminum extruded finned tube is a high-efficiency heat exchange element that combines the strength of ASTM A179 seamless cold-drawn low-carbon steel tube with the high thermal conductivity of aluminum fins. Its core structure consists of a steel tube base (outer diameter 3.2-76.2mm) and aluminum fins, compounded through an extrusion process to form a tightly bonded bimetallic structure.
Main Characteristics of an ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube
Pressure and Temperature Resistance: The tensile strength of the base tube ≥325MPa, suitable for operating conditions from -40°C to 300°C.
High-Efficiency Heat Transfer: The high thermal conductivity of aluminum fins increases the heat exchange area several times compared to bare tubes, improving heat transfer efficiency by more than 30%. Lightweight and Corrosion-Resistant: The aluminum layer is corrosion-resistant, suitable for harsh environments such as chemical plants and flue gas treatment plants.
Main Differences between ASTM A179 Tubes and Aluminum Composite Extruded Finned Tubes
Materials: ASTM A179 is made of carbon steel, while aluminum composite tubes have an aluminum-steel composite structure.
Temperature Resistance: ASTM A179 is resistant to high temperatures (≤300°C), while aluminum composite tubes are typically used in medium to low temperature environments.
Heat Transfer Efficiency: Due to the high thermal conductivity of aluminum, aluminum composite tubes have higher heat transfer efficiency.
How to Choose the Right Aluminum Composite Extruded Finned Tube?
Base Tube Material Selection
304 Stainless Steel: High corrosion resistance, suitable for corrosive environments such as chemical plants and marine environments, but with higher cost.
Carbon Steel: High cost-effectiveness, suitable for ordinary steam/hot water systems (temperature ≤120°C).
Copper Alloy: Optimal thermal conductivity, but the cost is 3-4 times that of aluminum, mostly used in precision applications.
ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube: Fin Height and Manufacturing Process
Height: 4-8mm suitable for low-flow-rate media (e.g., air conditioning condensers); 8-20mm for high-load heat exchange (e.g., high-temperature steam).
Manufacturing Process: Extrusion process offers high bonding strength (peel force ≥120N/cm), suitable for vibration environments; rolling process is low-cost but weaker in strength.
ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube Application Scenarios:
High-Temperature Steam Heat Exchangers: Requires high-temperature resistant materials (e.g., 304 stainless steel base tube + steel fins), fin height ≥10mm to avoid thermal expansion deformation.
Air Conditioning Condensers: Aluminum fins (thermal conductivity 237W/(m・K)) are superior, height 4-6mm, rolling process can be selected to reduce costs.
Prioritize matching with media characteristics (corrosiveness, temperature) and operating pressure, then select the process and height based on budget. For example, in high-temperature steam environments, a 304 stainless steel base tube with extrusion processing and fins of 12mm or more is recommended; for air conditioning condensers, a carbon steel base tube with rolled aluminum fins (6mm) is an option.
- Datasheet
- Drawing
- Certificates
| ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube | ||
| 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. | |
ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tube Appearance Dimension Inspection
ASTM a179 tube aluminum fin composited extruded fin 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.
Datang ASTM A179 Tube Aluminum Fin Composited Extruded Fin Tubes Bending Processing
Bending of fin tubes is an important step in the production process of astm a179 tube aluminum fin composited extruded finned tubes. Bending is to bend the astm a179 tube aluminum fin composited extruded finned 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.
ASTM A179 Tube Aluminum Fin Composited Extruded Finned Tubes Pull Off Test
ASTM a179 tube aluminum fin composited extruded finned 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 astm a179 tube aluminum fin composited extruded finned 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 .
