Heavy-duty Welding Workstation for Large Box Beam Structures is specifically designed for heavy-duty box beam structures and is the first of its kind in the country. It is equipped with circular and C-shaped flipping mechanisms, with a maximum carrying and flipping weight of 60 tons. It can handle workpieces with a maximum diameter of 6 meters and a maximum length of 30 meters. The two workstations share a common track of 80 meters and are integrated with two sets of gantry-style welding robots to form a complete workstation.