CNC Hollow Riveting Machine 1 For riveting round head, 2 empty heart riveting. 3 feed control installment CNC Hollow Riveting ... improved.D, high-performance material clamp and punch, riveting, high strength, and does not damage the rivet the original ... pipes, wood, plastic, leather and other products of assembly-line, greatly improving production efficiency. hydraulic ZKM6 CNC Hollow Riveting Machine