1. The steel structure has light weight and high bearing capacity: it is a lightweight and high-strength material
2. The steel mouth is close to a homogeneous isotropic body: the steel is divided into small pieces, each piece will have roughly the same mechanical properties, and the properties in all directions are roughly the same, which is the basis of solid mechanics
3. Good plasticity and toughness of steel: under static load, steel has good plastic deformation ability
4. The steel has good welding performance: the so-called "good" welding performance refers to the property that the steel can maintain the integrity of the welded part without cracking during and after welding
5. The steel structure has the characteristics of no leakage: whether it is welded, riveted or bolted, the steel structure can be sealed without leakage
6. Factory-based steel structure manufacturing and assembly-based construction: light components, convenient construction, small site occupation, short construction period, and easy demolition, reinforcement, reconstruction and expansion
7. The steel structure has good heat resistance
