The welding positioners are practical auxiliary positioning equipment. It is mainly used in workplaces such as welding of steel structures and assembly of mechanical parts. It puts the workpiece in the best welding or assembly position through the rotation and flipping of the workbench, and can be matched with the welding operator to form a special automatic welding machine. It is widely used in the manufacturing industry of various steel structure parts such as flanges and pipe joints. It can also be used as peripheral equipment to match robots to achieve automated welding. It is one of the commonly used equipment in modern pipe, container and steel structure production enterprises. In production, it can not only improve welding quality, but also reduce the number of work transfers, reduce workers' labor intensity, and quickly improve production efficiency.