ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,059, issued on Dec. 16, was assigned to JFE Steel Corp. (Tokyo).
"Electric resistance welded steel pipe and method for manufacturing the same" was invented by Atsushi Matsumoto (Tokyo), Ryo Nakazawa (Tokyo), Jun Yasuda (Tokyo) and Eiichi Urahata (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric resistance welded steel pipe, and a method for manufacturing the same are provided. An electric resistance welded steel pipe has a welded portion that includes a heat-affected zone having a steel microstructure principally including a bainitic ferrite phase and/or a bainite phase. The steel microstructure at half the wall thickness includes a ...