Welding manipulator is a special machine, which can weld the metal vessels, steel structure in all orientation by various welding methods such as circumferential and longitudinal welding line. Free standing base or motorized travel carriage can be picked by the user according to their requirements. By mounting different welding system, such as sub arc welding, TIG, MIG, etc, the user can achieve fully automatic welding functions, which not only provide perfect welding solutions but also save labor and time.