Abstract: A pipe processing device for use in cutting and/or chamfering a pipe to be welded where an attaching body is securely held on the outer peripheral surface of the pipe by means of three abutting members mounted in the angularly spaced relation with the position of the abutting member being adjustable by a screw bar and also smoothly moved along the outer peripheral surface of the pipe, which is then cut by means of a cutting wheel vertically for the axial line and if necessary the end of the pipe can be chamfered by means of a chamfering cutter mounted on the device.

Abstract: A holder for use in holding two pipes or pipe joints to be welded where one of the pipes or pipe joints is held by three pipe abutting members mounted in angularly spaced relation on a common holder with the position of the pipe abutting members being adjustable by a screw bar. The other pipe or pipe joint is held by means of three supporting screw bars adjustably mounted in the pipe abutting members. With this holder the facing end portions of the pipes or pipe joints maintain the groove abutting condition and the centering condition. The holder is easily positioned on the pipes or pipe joints for performing the welding operation.