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:
May. 25, 2021
Filed:
Sep. 21, 2016
Applicant:
Baoshan Iron & Steel Co., Ltd., Shanghai, CN;
Inventors:
Yaoheng Liu, Shanghai, CN;
Zhonghua Zhang, Shanghai, CN;
Assignee:
BAOSHAN IRON & STEEL CO., LTD., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/08 (2006.01); B21B 19/04 (2006.01); C21D 1/18 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/40 (2006.01); C21D 11/00 (2006.01); C21D 1/667 (2006.01); C21D 6/00 (2006.01); C22C 38/00 (2006.01); C21D 8/10 (2006.01);
U.S. Cl.
CPC ...
C21D 9/085 (2013.01); B21B 19/04 (2013.01); C21D 1/18 (2013.01); C21D 1/667 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/08 (2013.01); C21D 11/005 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/40 (2013.01); C21D 8/10 (2013.01); C21D 8/105 (2013.01); C21D 2211/002 (2013.01); C21D 2211/003 (2013.01); C21D 2211/005 (2013.01); C21D 2211/008 (2013.01); C21D 2211/009 (2013.01);
Abstract
A seamless steel tube with high strength and toughness, comprising the following chemical elements by mass: 0.1-0.25% of C, 0.1-0.5% of Si, 0.01-0.1% of Al, 0.6-2% of Mn, the balance of Fe and other unavoidable impurities, wherein C+Mn/6≥0.35. Also provided is a method for preparing a seamless steel tube.