The turning-roll series includes the self-alignment, the adjustable, the movable, the tilting and the anti-drift types. The series is used to weld, polish and assemble the cylinder-shells, and to line the shells with rubber. The self-alignment turning roll can be aligned by itself according to the size of the shell, the adjustable turning-roll can be adjusted by lead screws and bolts grading. They can be controlled with ACfrquency inverter, and the linear velocity is displayed by the digital. They are advanced and reliable. We also can design the customize various types of the turning-rolls in accordance with the customer′s requirement.