Steel pipe or tube for pressure vessels, method of producing steel pipe or tube for pressure vessels, and composite pressure vessel liner
US11168375B2 · kind B2 · utility
0Cited by
5References
7Claims
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Key dates
| Filing date | Aug 8, 2017 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jun 9, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A steel pipe or tube for pressure vessels having excellent quench crack resistance is provided. The steel pipe or tube for pressure vessels comprises: a specific chemical composition; and a metallic microstructure in which an average grain size of prior austenite grains is 500 μm or less, and an area fraction of microstructures other than ferrite is 50% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.