Invention Grant
- Patent Title: Threaded joint for steel pipes
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Application No.: US15311210Application Date: 2015-06-16
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Publication No.: US10774598B2Publication Date: 2020-09-15
- Inventor: Keita Inose , Fumio Ota , Shin Ugai , Suguru Yamaguchi , Masaaki Sugino
- Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION , VALLOUREC OIL AND GAS FRANCE
- Applicant Address: JP Tokyo FR Aulnoye-Aymeries
- Assignee: NIPPON STEEL CORPORATION,VALLOUREC OIL AND GAS FRANCE
- Current Assignee: NIPPON STEEL CORPORATION,VALLOUREC OIL AND GAS FRANCE
- Current Assignee Address: JP Tokyo FR Aulnoye-Aymeries
- Agency: Clark & Brody LP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@26b89d3a
- International Application: PCT/JP2015/002993 WO 20150616
- International Announcement: WO2015/194160 WO 20151223
- Main IPC: F16L15/00
- IPC: F16L15/00 ; E21B17/042 ; E21B17/04 ; F16L15/04

Abstract:
A threaded joint is constructed of a pin and a box. The pin includes, in order from an end thereof, a shoulder surface, a nose portion, a first sealing surface, a first male threaded portion, an annular portion, a second sealing surface, and a second male threaded portion. The box includes a shoulder surface, a recessed portion, a first sealing surface, a first female threaded portion, an annular portion, a second sealing surface, and a second female threaded portion. In the threaded joint, in a fastened state, the shoulder surfaces are in contact with each other, the first sealing surfaces are in contact with each other, the second sealing surfaces are in contact with each other, a clearance is provided between the nose portion and the recessed portion, a clearance is provided between the annular portions.
Public/Granted literature
- US20170101830A1 THREADED JOINT FOR STEEL PIPES Public/Granted day:2017-04-13
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