It utilizes compressed air as energy source and pneumatic motor as driving power ,and the driving blade-plate with low rotation speed and large torque after deceleration.
The inner diameter of the pope is expanded tightly by inner expanding block, and the machine can run after self-setting of the pope centre.
The groove blade has automatic feed device and the feed within the range of 0-45.
The machine can make grooving,chamrering and edge-chamfering to V and U type soldering seam of the pope,. Also it can operate the functions of grooving and lathing to the welded flange plane