Carbon Steel Seamless ASTM A179 Wound Fin Tube LL Type Fin Thk 0.4mm For Air Cooler
Carbon Steel Seamless Tube, ASTM A179 Wound Fin Tube, L Type, For Air Cooler
The ASTM A179 L-type fin tube is primarily used in the tube bundle section of an Air-Cooled Heat Exchanger (ACHE) — commonly known as a fin fan cooler. Within this system, it plays a crucial role in the air-side heat transfer process.
Chemical Composition (ASTM A179 - Base Tube)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.06 |
| Manganese (Mn) | 0.27 – 0.63 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
Mechanical Properties (ASTM A179)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 325 MPa |
| Yield Strength | ≥ 180 MPa |
| Elongation | ≥ 35% |
Key Advantages
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Cost-Effective: ASTM A179 carbon steel is economical for non-corrosive environments.
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Efficient Heat Transfer: L-type fin design ensures close metal contact between the tube and the fin for effective thermal performance.
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Simple Fabrication: Easy to produce and maintain.
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Durability: Wound fins resist vibration and mechanical stress in air cooler operation.
Application:
In a refinery, the ASTM A179 Carbon Steel L-Type Wound Fin Tube is typically used in the Air-Cooled Heat Exchanger (ACHE) units, specifically in the tube bundle section of the cooling system.
How It Works in Refinery ACHEs:
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Hot hydrocarbon fluid (from a column or reactor) flows inside the A179 carbon steel tube.
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Aluminum L-type fins wound around the tube surface increase the surface area for air-side heat rejection.
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Large axial fans force ambient air across the finned tube bundle.
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Heat transfers from the fluid to the tube wall → to the fins → to the air.
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The cooled fluid is sent to the next processing step or storage.
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