3、 Comparison with traditional materials
Comparison with traditional materials | Extruded aluminum tube | Steel | PVC/plastic steel |
Density (g/cm ⊃3;) | 2.7 | 7.9 | 1.4 |
strength | High (200~350MPa) | High (>400MPa) | Low (<50MPa) |
Excellent corrosion | resistance (natural oxide film) | Poor (requiring galvanizing or painting) | excellent |
Aesthetics | Excellent (multiple surface treatments) | medium | medium |
environmentally | medium | low | low |
4、 Technical Challenges and Solutions
Thermal expansion problem
Challenge: Aluminum has a high coefficient of thermal expansion (23.1 × 10 ⁻⁶/℃), which may affect structural stability.
Solution:
Reserve expansion joints during design;
Using composite materials (such as aluminum steel hybrid structures) to reduce the impact of thermal expansion.
Connection strength issue
Challenge: Aluminum tube connections are prone to becoming weak points in the structure.
Solution:
Use high-strength bolts or rivets;
Adopting Friction Stir Welding (FSW) to enhance welding strength.
cost control
Challenge: The unit price of aluminum tubes is higher than that of steel and PVC.
Solution:
Optimize cross-sectional design to reduce material usage;
Promote the use of recycled aluminum extruded pipes to reduce costs.
5、 Future Trends
Development of high-performance alloys
Develop higher strength and corrosion-resistant aluminum alloys (such as scandium containing aluminum alloys) to enhance structural performance.
Intelligent manufacturing
Combining BIM (Building Information Modeling) technology to achieve precise design and prefabrication of aluminum tube components.
Green Building Applications
The application proportion of extruded aluminum tubes in zero energy buildings and modular buildings will be further increased.
summarize
The core advantages of extruded aluminum tubes in the construction industry lie in their lightweight, high strength, corrosion resistance, design flexibility, and environmental friendliness, making them an ideal material for curtain walls, roofs, doors, windows, railings, and other scenarios. With the development of high-performance alloys and green manufacturing technology, extruded aluminum tubes will play a greater role in modern construction, driving the construction industry towards a more efficient and sustainable direction.