The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2014
Filed:
Nov. 09, 2006
Kazuhito Kenmochi, Tokyo, JP;
Takatoshi Okabe, Tokyo, JP;
Hiroyasu Yokoyama, Tokyo, JP;
Yuji Sugimoto, Tokyo, JP;
Yoshifumi Fujioka, Tokyo, JP;
Kei Sakata, Tokyo, JP;
Tomohiro Inoue, Tokyo, JP;
Hiroyuki Shirosawa, Tokyo, JP;
Motoaki Egi, Tokyo, JP;
Yasuo Nishida, Tokyo, JP;
Muneyoshi Murakami, Tokyo, JP;
Kazuhito Kenmochi, Tokyo, JP;
Takatoshi Okabe, Tokyo, JP;
Hiroyasu Yokoyama, Tokyo, JP;
Yuji Sugimoto, Tokyo, JP;
Yoshifumi Fujioka, Tokyo, JP;
Kei Sakata, Tokyo, JP;
Tomohiro Inoue, Tokyo, JP;
Hiroyuki Shirosawa, Tokyo, JP;
Motoaki Egi, Tokyo, JP;
Yasuo Nishida, Tokyo, JP;
Muneyoshi Murakami, Tokyo, JP;
JFE Steel Corporation, , JP;
Abstract
A method of efficiently manufacturing electric resistance welding pipes having excellent characterization of welded seams is provided, by which each lateral edge of a rounded strip immediately before electric resistance welding is securely shaped with desired tapering flexibly in response to change in strip thickness, so that welding quality may be kept to be excellent. A method of manufacturing electric resistance welding pipes, in which a strip is subjected to forming, then edges thereof are formed to substantially face each other, and then the edges are subjected to electric resistance welding to form a pipe, wherein an edge and an edge opposed thereto at one of an upper-surface side and a lower-surface side of the strip are shaped with tapering before the forming by means of cutting or shaving, or finpass forming.