Welding Positioner consists of worktable rotation unit and tilting unit. Through worktable elevation, the work piece fixed on the worktable can be placed to ideal position for welding and assembly by the worktable tilting and rotating. To achieve satisfactory welding speed, working table rotating is controlled invariably and continuously with inverter. Welding Positioners align the job to the best position for down hand welding for non circular jobs or for rotating circular jobs.