The term "Orbital Welding" is based on the latin word ORBIS = circle.
The combination "Orbital" and "Welding" specifies a process by which an arc travels circumferentially around a work piece (usually a tube or pipe).
Orbital Welding is presently used whenever the quality of the weld joint has the highest priority. These demands are not only limited to mechanical strength and X-ray qualification, but also to the important aspects of the aesthetics of the weld seam. For any users a uniform, flat and smooth root-pass is the main reason for using this process.