Product Description Pneumatic rapid clamping, automatic centering and guarantee the axiality of work pieces. PLC program control, automatically complete circular seam welding. Main CO2 welding technique, and various circular seam welding as MAG, TLG can be equipped as well. Word piece rotation is controlled by imported servo motor. PLC whole course control. Elastic collet for clamping work pieces, guarantee the roudness, applicable for thi plate welding, easy and precise for collet installation.,