Title:
METHOD OF MANUFACTURING STAINLESS STEEL PIPE FOR USE IN PIPING SYSTEMS
Document Type and Number:
WIPO Patent Application WO2004104464
Kind Code:
A3
Abstract:
A welded low carbon dual phase (ferrite plus martensite) and/or low carbon martensitic stainless steel PIPE having requisite yield strength and corrosion and/or erosion resistance is shown. Pipe can be manufactured up to a maximum outside diameter from finished plate or coil by utilizing a high speed-forming mill rather than using the traditional costly seamless pierced billet methods, or utilizing U-O-E or break press. An ERW technique is also used rather than utilizing the traditional welding methods. See Figure 1 Welded pipe dimensions and mechanical properties can be achieved which comply with the heat treatment process and the continuous roll forming mill's capability to produce the yield strengths and dimensional tolerances required to meet the service criteria of the pipe's intended application.
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Inventors:
GANDY JOHN
Application Number:
PCT/US2004/015598
Publication Date:
September 01, 2005
Filing Date:
May 19, 2004
Export Citation:
Assignee:
TORQUELOCK CORP (US)
International Classes:
B21C37/08; (IPC1-7): B32B15/18; B23K13/02
Foreign References:
| US5820703A | 1998-10-13 | |||
| US6379821B2 | 2002-04-30 |
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