Steel Structure Building is a type of building with steel as the main structural material. The features of steel construction include: 

    High strength: Steel is stronger than traditional materials such as concrete and wood, and can withstand greater loads and pressures. 

    Light weight: Compared with traditional building materials, steel has a lighter weight, which can reduce the overall weight of the building, thus reducing the burden on the foundation and foundation. 

   Good seismic performance: steel structure buildings have good ductility and energy absorption, which can maintain stability in natural disasters such as earthquakes and reduce casualties and property losses. 

    Fast construction speed: steel structure components can be prefabricated in the factory, and the installation speed is fast on site, which shortens the construction period. 

    Environmental protection and energy saving: steel structure buildings can be recycled and reused, reducing environmental damage and pollution. At the same time, the steel structure building also has good thermal insulation and thermal insulation performance, which can reduce the energy consumption of the building. 

    Scraping and Cleaning: The surface of the steel is scraped clean using a scraper or wire brush to remove any foreign matter or scale. This is done to ensure a clean surface for welding.
    Pre-Welding: Before welding, the steel plates are tack welded or bolted together to hold them in place. This step also includes the placement of braces, angles, and other reinforcing bars to support the steel structure during the welding process.
    Welding: The steel plates are welded together using electric arc welding, gas welding, or laser welding techniques, depending on the specific requirements of the project. Welding is a highly skilled process that requires trained and experienced welders.
    Post-Welding: After welding, the welds are inspected for any defects or imperfections using various non-destructive testing methods such as magnetic particle inspection, liquid penetrant inspection, and ultrasonic testing. These tests help identify any cracks, porosity, or other defects in the welds.
    Grinding and Polishing: If any defects are found during the post-welding inspection, the welds are ground or polished to remove the defects. This step ensures a smooth and finished appearance for the steel structure.
    Final Inspection: The finished steel structure is inspected for any visible defects or imperfections. This step ensures that the structure meets the design specifications and quality standards.
    Delivery: Once the final inspection is completed and the structure is approved, it is delivered to the construction site for installation.

    The above steps are general guidelines for structural steel fabrication and may vary depending on the specific project requirements and manufacturer's procedures. It is important to follow the manufacturer's instructions and use quality materials to ensure the structural integrity of the steel structure.