Federal Furniture

　　Steel structures are structures made of steel materials, and they are one of the main types of building structures. The structure is mainly composed of components such as steel beams, steel columns, and steel trusses made of steel sections and steel plates, and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. The various components or parts are usually connected by welds, bolts, or rivets. Because of its light weight and simple construction, it is widely used in large factories, venues, super high-rise buildings, and other fields. Steel structures are susceptible to rust; generally, steel structures require rust removal, galvanizing, or coatings and require regular maintenance.
　　1. High material strength, light weight
　　Steel has higher strength and a higher modulus of elasticity. 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 components have small sections and are lightweight, making them easy to transport and install and suitable for structures with large spans, high heights, and heavy loads.
　　2. Steel has good toughness and ductility, uniform material, and high structural reliability
　　Suitable for withstanding impact and dynamic loads, it has good seismic performance. The internal structure of steel is uniform and close to an isotropic homogeneous body. The actual working performance of the steel structure is more consistent with the calculation theory. Therefore, the reliability of the steel structure is high.
　　3. High degree of mechanization in the manufacturing and installation of steel structures
　　Steel structure components are easy to manufacture in factories and assemble on-site. Factory mechanized manufacturing of steel structure components has high precision, high production efficiency, fast on-site assembly speed, and short construction periods. Steel structure is a highly industrialized structure.
　　4. Good sealing performance of steel structures
　　Because welded structures can be completely sealed, they can be made into high-pressure containers, large oil tanks, and pressure pipelines with good airtightness and watertightness.
　　5. Steel structures are heat-resistant but not fire-resistant
　　When the temperature is below 150℃, the properties of steel change very little. Therefore, steel structures are suitable for hot workshops, but when the structure surface is subjected to thermal radiation of around 150℃, heat insulation plates should be used for protection. At temperatures of 300℃-400℃, the strength and elastic modulus of steel decrease significantly, and at around 600℃, the strength of steel tends to zero. In buildings with special fire protection requirements, steel structures must be protected with fire-resistant materials to improve the fire rating.
　　6. Steel structures have poor corrosion resistance
　　Especially in humid and corrosive environments, it is easy to rust. Generally, steel structures require rust removal, galvanizing, or coatings and require regular maintenance. For offshore platform structures in seawater, special measures such as "zinc block cathodic protection" should be used for corrosion prevention.
　　7. Low-carbon, energy-saving, environmentally friendly, and reusable
　　Demolition of steel structure buildings produces almost no construction waste, and the steel can be recycled and reused.