As one of the main types of building structures, steel structure is mainly made ​​of steel. Steel has advantages: high strength and rigidity, light weight, so it apply to the construction of large-span and high-rise, overweight building, Mainly used for load-bearing framework of heavy-duty workshop, dynamical load workshop structure, shell structures, tall TV tower and mast structures, bridges and warehouse and other large-span structures, and high-rise construction.
Advantage: Low cost, disassemble and removable in use, design, construction and other aspects. 
1. Large space. Steel structure building can be better meet requirements of separation than traditional building, also improve area utilization by reducing cross-sectional area of column and use of light wall. Indoor effective use area increase about 6%
2. Energy conservation. Light energy-saving standardized H beam, C beam, square steel, sandwich panels were used in wall. Good insulation properties, high seismic degree, saving 50% energy.
3. Earthquake resistance and wind resistance. The steel structure system for residential construction can take advantage of good ductility of steel structures, plastic deformation ability, has excellent earthquake and wind resistance, greatly improve the safety and reliability of buildings. Particularly in the event of earthquake, typhoon disaster, steel structure can avoid collapse damage of buildings

4. Light weight. Steel structure system has light weight, which is about 50% of concrete structure, can greatly reduce the basic cost.

5. Fast construction speed. Construction period is shorter than the traditional residential system at least one-third, Five workers can finish a 1,000 square meters building in just 20 days
6. Environmental protection. Steel residential construction greatly reduces the sand, stone, ash content, the materials used are mainly green, 100% recycling or degradation, will not cause waste.
7. Comfortable. Large room design, the indoor space can be divided according to many programs to meet different needs of users
8. Durability. Cold-formed steel component is used in all light steel structure buildings, steel skeleton is made of super anticorrosive and high-strength cold rolled galvanized steel sheet, Effectively prevent steel sheet corrosion in building and using process, increase the usage age of light steel component up to 100 years.

　　 
Compared with ordinary reinforced concrete structure, steel structure has advantage such as uniformity, strength, fast construction speed, high seismic degree, easily recycled etc.
The strength and elasticity of steel is many times higher than that of masonry and concrete. Therefore, under the same load conditions, steel structure has light weight. From the destruction side, steel structure belong to ductile destruction structure and has more larger deformation omen in advance, so it can anticipate dangerous.
Steel plant has light weight, less material, low cost, short construction period, large span, safe, reliable, attractive appearance, structure, stability and other advantages. So it is widely used in large-span industrial plant, warehouse, cold storage, high-rise buildings, office building, multi-storey parking lot, houses and other construction industry.