Electric resistance welded steel pipe, method for manufacturing the same, and automotive structural member
US12173835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2021 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | Jan 27, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B2265/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An electric resistance welded steel pipe having excellent formability and torsional fatigue resistance and a method for manufacturing the same. The electric resistance welded steel pipe includes a seam region and a base metal region, the seam region having a range of ±10 degrees in a pipe circumferential direction with respect to an electric resistance welded seam formed in a pipe longitudinal direction, the base metal region being a region other than the seam region. The electric resistance welded steel pipe has an r-value in the pipe longitudinal direction of 1.0 or greater, H (mm) and W (mm) satisfy a specified formula, and Ts(MAX) (mm) and Tb(Ave) (mm) satisfy a specified formula.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.