A most commonly used method to fabricate accelerating tubes is machining, followed by stacking of disks, and then bonding such as diffusion bonding and brazing. In accelerating structures fabricated with this kind of method, surface currents associated with magnetic fields flow across disk-to-disk junctions. On the other hand, we focus on a quadrant-type structure, where no surface currents flow across any junctions although naive such structures have some disadvantages. In this paper, based on our new ideas to overcome all of the disadvantages, we present a fabrication process of a quadrant-type X-band accelerating structure in the form of a single-cell test cavity, together with results on machining of quadrants and test of electron beam welding (EBW).