METHOD FOR EXPOSING RESIN-COATED METAL PIPE
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United States of America Patent
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Issued Date -
Jan 20, 2011
app pub date -
Apr 30, 2010
filing date -
Jul 15, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of exposing a metal pipe that is resin-coated by which part of the resin coating layer can be easily removed to expose the metal pipe. Blade tips are advanced into a resin coating layer in a region of the circumferential surface of a pipe with a predetermined spacing in the longitudinal direction of the pipe, and circumferential notches are introduced into the circumferential surface of the resin coating layer by rotating blades with respect to the pipe. A blade tip is advanced into a resin coating layer between the two circumferential notches and by moving a blade in the longitudinal direction, a longitudinal notch is introduced into the circumferential surface of the resin coating layer. A force is caused to act upon an outer circumferential surface of the resin coating layer between the two circumferential notches in the direction opposite that of the longitudinal notch and the resin coating layer is peeled off, thereby exposing a portion of the metal pipe.
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