Orbital welding is a standardised and computer controlled process that produces consistent high purity results. High purity means that there is no oxidisation/contamination after the weld process present on the inside wetted surface of the tube that carries the process gas.
Because of the inherent control of the orbital welding process, the smallest standard tube diameters from 1/8” can be processed. On a larger scale, pipes with diameters up to 170mm and walls up to 3.5mm thick can be joined by orbital welding. Cambridge Fluid Systems are currently developing an orbital welding process for pipe up to 6mm wall thickness.