Patent ID: 6457532
Filing Date: 2002-10-01
Classification: B21D,E21B,Y10T

Abstract:
A method for profiling a pipe or other hollow tubular article comprising:applying a roller system to a part of a pipe bore selected to be profiled, wherein the roller system comprises: an annular body having a longitudinal bore disposed there-through; one or more recesses formed in an outer surface of the body; and one or more rollers each mounted on one or more slideable pistons, wherein the pistons are sealably disposed within the one or more recesses; translating the roller system across the bore in a direction including a circumferential component while applying a force to the roller system in a radially outwards direction with respect to a longitudinal axis of the pipe, and continually applying and translating until the pipe is plastically deformed substantially into the intended profile.