“A roller架 is designed to rotate circular workpieces by utilizing the friction between the welding parts and the driving roller, thereby completing the welding of circular seams. The welding speed can be adjusted by varying the speed of the driving roller on the roller架. The roller should always remain on the same axis to prevent deformation and slippage during the workpiece's rotation. There are three types of adjustable roller架: manual screw adjustment, manual bolt shift, and electric slider shift. By adjusting the center distance of the roller, it can be adapted for different diameter cylinders.”