Pipe end forming methods and pipe clamp
AssigneeCore Linepipe Inc.
InventorsSamuel Glen Bouey, Dave Sheehan, David McLeod, David McColl, Kevin Gartner, Brian Bonner
Life of this patent
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Abstract
Methods for forming a pipe end for a pipe having an inner surface lined with a liner are provided, wherein the pipe is cut at an axial location to provide a first end having an initial inner diameter defined by an inner surface of the pipe; and a length of the pipe is expanded from the first end to form an upset, bell end where an inner diameter of the upset, bell end is larger than the initial diameter, thereby defining an annulus between the inner surface of the pipe and the liner. A clamp for limiting a pipe's movement during various operations is also provided.
Claims10
A method for forming a pipe end for a pipe having an inner surface lined with a liner, the method comprises:
- cutting the pipe at an axial location to provide a first end having an initial inner diameter defined by an inner surface of the pipe;
- cutting back the pipe from the first end to define a receded first end and to provide an exposed length of the liner beyond the receded first end;
- and
- expanding a diameter of the pipe from the receded first end to form an upset, bell end where an inner diameter of the upset, bell end is larger than the initial diameter, thereby defining an annulus between the inner surface of the pipe and the liner.
Dependencies are inferred from the claim text.