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:
Jan. 02, 2024
Filed:
Apr. 10, 2019
Nippon Steel Corporation, Tokyo, JP;
Akira Tsuto, Tokyo, JP;
Hiroyuki Kaitani, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A joint connection method is provided that is a method for connecting joints that are used for a hydraulic pressure test or the like to a long pipe by using a production facility which includes a conveyance system, a welding apparatus, a winding apparatus and an X-ray inspection apparatus. The joint connection method includes a step of girth welding a first joint to a front end portion of the long pipe by means of the welding apparatus, a step of inspecting a girth weld zone of the first joint by means of the X-ray inspection apparatus, a step of girth welding a second joint to a rear end portion of the long pipe by means of the welding apparatus, and a step of inspecting a girth weld zone of the second joint by means of the X-ray inspection apparatus.