Plug for rolling of seamless steel pipe, method for manufacturing the same and method for manufacturing seamless steel pipe using the same
US10441982B2 · kind B2 · utility
0Cited by
6References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 9, 2013 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Feb 7, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B19/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A plug for rolling of a seamless steel pipe, the plug having an oxide layer composed of a cobalt-base oxide on a surface of a coating layer formed by coating a surface of a base metal with cobalt or a cobalt-base alloy, a method for manufacturing the plug and a method for manufacturing a seamless steel pipe using the plug.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.