“…From the perspective of the weld itself, there are three main factors that determine the quality, which are the internal defects, the appearance and surface defects, and the size. Therefore, the weld quality level has two meanings, one is the inspection for internal defects of the weld, and the other is the inspection for the appearance and surface defects of the weld [3]. However, in most cases at present, designers only make general regulations.…”