Equipment line for manufacturing seamless steel tube or pipe and method of manufacturing high-strength stainless steel seamless tube or pipe for oil wells using the equipment line
US10570471B2 · kind B2 · utility
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4References
2Claims
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Key dates
| Filing date | Sep 25, 2014 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Sep 25, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An equipment line for manufacturing a seamless steel tube includes a steel heating device, a piercing device that pierces the steel into a hollow steel tube, a rolling mill that forms the hollow steel tube into a seamless steel tube having a predetermined shape, and a cooling system arranged between the heating device and the piercing device or between the piercing device and the rolling mill.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.