Zone refinement of inertia welded tubulars to impart improved corrosion resistance
US4365136A · kind A · utility
22Cited by
11References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1981 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Feb 23, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/0823
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Corrosion resistance of tubular metal products is enhanced, and particularly to welds formed between metal tubes or pipes and threaded ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.