1. High material strength and lightweight

The steel used in the steel structure has high strength and high elastic modulus. Compared with concrete and wood, the ratio of its density to yield strength is relatively low. Therefore, under the same stress conditions, the steel structure has a small cross-section, lightweight, easy transportation, and install, and is suitable for structures with large spans, high heights, and heavy loads.

2. Steel has good toughness, plasticity, uniform material, and high structural reliability

Steel is suitable for bearing impact and dynamic loads and has good seismic resistance. The internal structure of steel is uniform and close to an isotropic homogeneous body. Therefore, the reliability of the steel structure is high.

3. High degree of mechanization in steel structure manufacturing and installation

Steel structure components are easy to manufacture in factories and assemble on-site. The finished products of steel structure components manufactured by mechanized factories are of high precision, high production efficiency, fast assembly speed on-site, and short construction period. The steel structure is the most industrialized.

4. Good sealing performance of steel structure

Since the welded structure can be completely sealed, it can be made into high-pressure containers, large oil pools, pressure pipelines, etc. with good airtightness and watertightness.

5. Steel structure is heat-resistant but not fire-resistant

When the temperature is below 150℃, the properties of steel change very little. Therefore, the steel structure is suitable for hot workshops, but when the structure's surface is subjected to heat radiation of about 150℃, it should be protected by heat insulation boards. When the temperature is 300℃-400℃, the strength and elastic modulus of steel are significantly reduced, and when the temperature is around 600℃, the strength of steel tends to zero. Steel structures must be protected by refractory materials to improve the fire resistance level in buildings with special fire protection requirements.

6. Poor corrosion resistance of steel structure

Especially in humid and corrosive media environments, it is easy to rust. Generally, steel structures need to be rust-proofed, galvanized, or painted, and maintained regularly. For offshore platform structures in seawater, special measures such as "zinc block anode protection" are required to prevent corrosion.

7. Low carbon, energy-saving, green and environmentally friendly, reusable

The demolition of steel structure buildings will hardly generate construction waste, and the steel can be recycled and reused.

The steel used in the steel structure has high strength and high elastic modulus. Steel is suitable for bearing impact and dynamic loads and has good seismic resistance. Steel structure components are easy to manufacture in factories and assemble on-site. The demolition of steel structure buildings will hardly generate construction waste, and steel can be recycled and reused.

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