Invention Application
US20050178456A1 Uoe steel pipe with excellent crash resistance, and method of manufacturing the uoe steel pipe
有权
具有优异抗冲击性能的Uoe钢管，以及制造uoe钢管的方法
- Patent Title: Uoe steel pipe with excellent crash resistance, and method of manufacturing the uoe steel pipe
- Patent Title (中): 具有优异抗冲击性能的Uoe钢管，以及制造uoe钢管的方法
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Application No.: US10515543Application Date: 2003-05-23
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Publication No.: US20050178456A1Publication Date: 2005-08-18
- Inventor: Eiji Tsuru , Hitoshi Asahi
- Applicant: Eiji Tsuru , Hitoshi Asahi
- International Application: PCT/JP03/06486 WO 20030523
- Main IPC: B21C37/08
- IPC: B21C37/08 ; C21D9/08 ; C21D9/50 ; C22C38/02 ; C22C38/04 ; C22C38/12 ; C22C38/14 ; F16L9/00 ; B21D31/04
Abstract:
The present invention relates to UOE steel pipe excellent in collapse characteristics formed by the UOE production method and a method for forming this UOE steel pipe, said UOE steel pipe characterized in that a ratio between compression and tension of yield strength in the circumferential direction is at least 1.05 near the inside surface and is at least 0.9 to not more to 1.0 from the center of plate thickness to the outside surface.
Public/Granted literature
- US07892368B2 UOE steel pipe excellent in collapse strength and method of production thereof Public/Granted day:2011-02-22
Information query
