Duplex stainless steel seamless pipe and a method for producing the same
US4604887A · kind A · utility
3Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Nov 30, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/44
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A duplex stainless steel seamless pipe can be inexpensively produced in high productivity and yield without causing cracks during the working steps in the plug mill process by a proper combination of the composition of the steel and the working conditions of a billet and a hollow piece for the production of the pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.