Invention Grant
- Patent Title: Clad welded pipe or tube and method of producing same
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Application No.: US16331222Application Date: 2017-08-31
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Publication No.: US11484927B2Publication Date: 2022-11-01
- Inventor: Takatoshi Okabe , Atsushi Matsumoto , Shinsuke Ide , Akihide Matsumoto
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Kenja IP Law PC
- Priority: JPJP2016-177918 20160912,JPJP2016-177924 20160912,JPJP2016-177936 20160912
- International Application: PCT/JP2017/031490 WO 20170831
- International Announcement: WO2018/047723 WO 20180315
- Main IPC: B21C37/08
- IPC: B21C37/08 ; B23K13/06 ; C21D9/08 ; C21D9/50 ; C22C38/06 ; C22C38/38 ; B23K35/38 ; B23K11/087 ; B21B1/22 ; B23K11/00 ; C22C38/04 ; F16L9/18 ; C22C38/00 ; C21D6/00 ; B32B15/01 ; C22C38/12 ; C22C38/02 ; C22C38/14 ; B21C37/14 ; B23K11/16 ; B23K11/34 ; F16L9/17 ; C22C38/40 ; B23K101/06 ; B23K103/04 ; B23K103/18 ; B23K101/34 ; B23K101/18

Abstract:
Provided is a clad welded pipe or tube that has improved pipe or tube mechanical properties by reducing the width of a weld without its function as a clad pipe or tube being impaired. A clad welded pipe or tube comprises: a first layer made of base metal; and a second layer placed on one surface of the first layer, and made of first cladding metal that is a material different from the base metal, wherein a pipe or tube circumferential length L1 of weld metal at a pipe or tube inner surface and a pipe or tube circumferential length L2 of the weld metal at a pipe or tube outer surface in a weld are each 0.0010 mm or more and 1.0 mm or less, and the base metal is not exposed at a first cladding metal-side surface of the clad welded pipe or tube in the weld.
Public/Granted literature
- US20190184437A1 CLAD WELDED PIPE OR TUBE AND METHOD OF PRODUCING SAME Public/Granted day:2019-06-20
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