High-frequency welded finned tube manufacturing
4 month ago
ASTM B241 High-Frequency Welded Aluminum Finned Aluminum Tubes for Power Plants
Overview
Specification
| Standard | ASTM B241 |
| Grades | Al 1060 Al 1100 Al 2014 Al 2024，etc. |
| Fin Type | Solid |
| Manufacturing Process | High-Frequency Resistance Welding |
| Surface Finish | Mill Finish / Anodized / Anti-Corrosion Coating |
| Tube OD | 16 mm – 73 mm |
| Tube WT | 1.0 mm – 4.0 mm |
| Fin Height | 6 mm – 20 mm |
| Fin Thickness | 0.8 mm – 1.2 mm |
| Fin Pitch | 2.0 mm – 6.0 mm |
| Tube Length | customized |
Key Features
- All-aluminum construction: Eliminates corrosion from dissimilar metals and provides a uniform coefficient of thermal expansion.
- High thermal conductivity: Ensures excellent heat transfer efficiency, ideal for power plant air-cooled condensers and waste heat recovery systems.
- Lightweight and easy to install: 70% lighter than equivalent steel tubing, reducing structural load and simplifying handling.
- Corrosion and oxidation resistance: Naturally forms a protective oxide film, effectively resisting corrosion even in humid or marine environments.
- High bonding strength: High-frequency welding creates robust, continuous fin-tube connections, ensuring long-term durability.
- Energy efficiency: Maximizes heat exchange performance while minimizing energy loss during power generation.
Chemical Composition
| Grade | Si (%) | Fe (%) | Cu (%) | Mn (%) | Mg (%) | Zn (%) | Ti (%) | Al (%) |
|---|---|---|---|---|---|---|---|---|
| Al 1060 | ≤0.25 | ≤0.35 | ≤0.05 | ≤0.03 | ≤0.03 | ≤0.05 | ≤0.03 | ≥99.6 |
| Al 5052 | 0.25 | 0.40 | ≤0.10 | 0.10 | 2.2–2.8 | ≤0.10 | ≤0.15 | Balance |
| Al 6063 | 0.20–0.60 | ≤0.35 | ≤0.10 | ≤0.10 | 0.45–0.90 | ≤0.10 | ≤0.10 | Balance |
Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Thermal Conductivity (W/m·K) | Density (g/cm³) |
|---|---|---|---|---|---|
| Al 1060 | ≥60 | ≥30 | ≥25 | 234 | 2.70 |
| Al 5052 | ≥215 | ≥130 | ≥10 | 138 | 2.68 |
| Al 6063 | ≥160 | ≥110 | ≥12 | 201 | 2.70 |
Steel Grade
- Al 1060: High-purity aluminum with a purity ≥99.6%, possessing excellent thermal conductivity and corrosion resistance, suitable for low-pressure, high-thermal-conductivity systems.
- Al 5052: A high-strength magnesium-aluminum alloy with excellent corrosion resistance, especially in marine and saltwater environments, suitable for power generation and marine applications.
- Al 6063: Good mechanical strength and high surface finish, commonly used in medium- to high-strength heat exchanger systems.
Application
- Power plants: Air-cooled condensers, air preheaters, waste heat recovery units, etc.
- Petrochemical and refining systems: Air coolers and gas coolers for process systems.
- HVAC and refrigeration: Condensers, evaporators, and air handling units.
- Marine and offshore: Lightweight, corrosion-resistant heat exchangers for offshore platforms.
Possible Alternative Grades
- Al 3003: Higher strength, good corrosion resistance, suitable for general heat exchangers.
- Al 6061: High strength and moderate corrosion resistance, suitable for structural systems.
- Al 5083: Excellent corrosion resistance in marine environments.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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