The use of aluminum alloy profiles in shipping vehicles has to be calculated from the 1890s, and there have been more than 100 years of Rexroth. Nowadays, aluminum alloy profiles are widely used in ship vehicles, and aluminum type vessels are developing faster and faster.

2. Application and development of aluminum alloy profiles in aircraft

Aluminum alloy profiles also have great development in the aerospace industry because of their lightweight, strong plasticity, corrosion resistance, and ease of assembly. Large-scale special aluminum alloy profiles have become one of the important subjects in various local competitions. At present, many complex overall large-scale special aluminum alloy extrusion profiles have become indispensable and important structural materials in the aerospace industry. For example the aluminum plates and aluminum profiles required for each passenger aircraft require about tens of tons, and the outer shell of each aircraft requires high-quality aluminum alloy profiles. The skeleton of the aircraft needs to be covered with aluminum alloy, and the main skeleton needs to be supported by extruded profiles... Many countries have established research institutes to study the application of aluminum profiles on aircraft.
3. Development prospects of aluminum profiles on railway vehicles

In recent years, our railway vehicles are developing towards lightweight, large size, double deck, high speed, safety, energy-saving, comfort, multi-function, low cost, and long life. Along with this, the requirements for car bodies made of aluminum profiles have gradually increased. Therefore, aluminum profiles for railway vehicles are also developing in the direction of large-scale integration, light-weight hollow walls, universal standardization, high performance, multi-function, energy saving, safety, cost reduction, improved material utilization, and production efficiency.