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. 08, 2015
Filed:
Apr. 02, 2013
Applicant:
Jfe Steel Corporation, Tokyo, JP;
Inventors:
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 11/00 (2006.01); B21C 37/16 (2006.01); B21C 37/08 (2006.01); B21C 37/30 (2006.01); B23K 31/02 (2006.01); B23K 11/093 (2006.01); B21D 5/01 (2006.01);
U.S. Cl.
CPC ...
B21C 37/16 (2013.01); B21C 37/08 (2013.01); B21C 37/0803 (2013.01); B21C 37/0815 (2013.01); B21C 37/30 (2013.01); B21D 5/015 (2013.01); B23K 11/0935 (2013.01); B23K 31/02 (2013.01); B23K 2201/06 (2013.01);
Abstract
A UOE steel pipe used to form a structure by performing butt circumferential welding and having an outside diameter shape in a waveform in a longitudinal direction is shaped to have no local minimum of the outside diameter shape in the waveform within a predetermined length from both longitudinal end portions.