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1. (WO2018197848) METHOD FOR EXPANDING A TUBULAR STRUCTURE

Pub. No.:    WO/2018/197848    International Application No.:    PCT/GB2018/051057
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 24 01:59:59 CEST 2018
IPC: F16L 13/14
B21D 41/02
B29C 57/04
F16L 47/06
Applicants: RADIUS SYSTEMS LIMITED
Inventors: WALLACE, Gordon James
Title: METHOD FOR EXPANDING A TUBULAR STRUCTURE
Abstract:
The invention provides a method for expanding a diameter of a tubular structure. The method comprises fitting a removable sizing gauge around an external surface of the tubular structure and inserting a substantially tubular metallic insert within the tubular structure. The metallic insert comprises an external diameter smaller than an unexpanded internal diameter of the tubular structure. The method comprises urging said metallic insert radially outwardly within the tubular structure to expand said metallic insert and said tubular structure. The metallic insert is arranged such that said urging results in work hardening of the metallic insert.