https://www.steelseiko.com/products/aluminum-scaffold-beams/
With the development of aluminum smelting technology and the continuous royalty of aluminum alloy material performance, aluminum alloy material is more and more widely used in bridge engineering. High-quality aluminium I beams, also known as structural aluminum scaffold beams, is an extruded aluminum product. Due to its high strength, light weight, heat treatment, easy welding, cutting, forming and other characteristics, 6061 aluminum alloy is often used. Aluminium I beams are the mainstream product of the international popular support beam (keel), which is used for formwork to support the main beam and the secondary beam. Aluminium scaffold beams have the characteristics of light weight, high strength and good corrosion resistance.