When constructing a steel structure workshop, the main steel materials used include ordinary medium plates (thickness ranges from 14mm to 50mm) and mid plates (thickness ranges from 5mm to 12mm). These steel materials are usually Q235B or Q345B, and Q345D is used for cold regions. I-beams and H-beams are usually made of Q235B, but Q345B may also be used, while U channels and angles are mostly Q235B, and Q345B is occasionally used. In addition, other types of steel such as round tubes, round...




