THIS SERIES ROLLER-BED FEATURES IS AUXILIARY EQUIPMENT.BY PROPER ADJUSTMENT, IT CAN MAKE WORK PIECE AT OPTIMUM WELDING POSITION THIS SERIES ROLLER-BED FEATURES IS AUXILIARY EQUIPMENT.BY PROPER ADJUSTMENT, IT CAN MAKE WORK PIECE AT OPTIMUM WELDING POSITION,ATTAINING PURPOSE OF REDUCING LABOR INTENSITY,IMPROVING WELDING SPEED, GUARANTEEING WELDING QUALITY.