The welding boom and column is a device for producing all kinds of tanks, distillation towers, large pipes, pressure tanks and even metal structures, which are used in the design of automatic and semi-automatic welding systems, such as submersible welding and gas shield welding. Also, this device is used for welding large shells along with the tank driver. This device also has the capability of linear welding in cases of longitudinal joints of tanks or metal structures.