1. High material strength and low self-weight
Steel possesses high strength and a high modulus of elasticity. Compared to concrete or timber, it has a lower ratio of density to yield strength; consequently, under identical loading conditions, steel structural members feature smaller cross-sections and lower self-weight. This facilitates transportation and installation, making steel ideal for structures with large spans, great heights, or heavy load-bearing requirements.
2. Excellent toughness and ductility, material uniformity, and high structural reliability
Steel is well-suited to withstand impact and dynamic loads, offering superior seismic performance. Its internal microstructure is uniform, behaving nearly as an isotropic, homogeneous material. The actual performance of steel structures aligns closely with theoretical calculations, ensuring high structural reliability.
3. High degree of mechanization in fabrication and installation
Steel structural components are well-suited for factory fabrication and on-site assembly. Factory-based mechanized production ensures high precision and efficiency, while on-site assembly allows for rapid construction and shorter project timelines. Among all structural types, steel structures exhibit the highest level of industrialization.
4. Superior sealing performance
Because welded steel structures can be made completely airtight and watertight, they are ideal for applications such as high-pressure vessels, large-scale oil storage tanks, and pressure pipelines.