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:
Sep. 19, 2017
Filed:
Apr. 09, 2012
Applicants:
Yasuhiro Matsuki, Kawasaki, JP;
Tomohiro Inoue, Tokyo, JP;
Inventors:
Yasuhiro Matsuki, Kawasaki, JP;
Tomohiro Inoue, Tokyo, JP;
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/06 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C22C 38/00 (2006.01); C22C 38/16 (2006.01); B23K 11/16 (2006.01); B23K 11/087 (2006.01); F16L 9/02 (2006.01); C22C 38/18 (2006.01); C22C 38/08 (2006.01); C21D 8/02 (2006.01); C21D 8/10 (2006.01); C21D 9/08 (2006.01); F16L 9/16 (2006.01);
U.S. Cl.
CPC ...
C22C 38/06 (2013.01); B23K 11/0873 (2013.01); B23K 11/16 (2013.01); C21D 8/0226 (2013.01); C21D 8/105 (2013.01); C21D 9/08 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/08 (2013.01); C22C 38/16 (2013.01); C22C 38/18 (2013.01); F16L 9/02 (2013.01); F16L 9/165 (2013.01); Y10T 428/12951 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/13 (2015.01);
Abstract
A low-yield ratio high-strength electric resistance welded steel pipe has a yield ratio of 80% or less and a TS of 655 MPa or more. A steel material has a composition containing 0.38% to 0.45% C, 0.1% to 0.3% Si, 1.0% to 1.8% Mn, 0.03% or less P, 0.03% or less S, 0.01% to 0.07% sol. Al, and 0.01% or less N on a mass basis.