A rotary welding positioner is a welding positioner that rotates the assembly so that the welder can easily access the area that must be welded. They are designed to allow the worker to stand in one position and be able to work continuously on a horizontal surface, adding comfort to the worker while reducing fatigue and increasing productivity. Rotary welding adapters grab a component, such as a pipe joint, and can then be moved to allow the welder to continuously weld the joint without weld interruption. They are designed to improve weld quality and make welding safer and faster.