Orbital welding is a fully mechanised welding process involving the use of a robot to make the weld. A tungsten electrode rotates around the outside of the seam to be welded. The welding head rotates 360 degrees around the tube. This process is carried out very precisely according to a fixed path, thus creating a very straight, high-quality weld.
Orbital welding is used predominantly for the repeatable welding of tubes and pipes when very precise weld joints are required and yet can be made with speed.