Method for producing bimetallic line pipe
US7596848B2 · kind B2 · utility
10Cited by
28References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2005 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Aug 21, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49927
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention involves a system and method for producing bimetallic pipe. In one embodiment of the present invention, the method includes inserting an inner shell into an outer shell and reducing the outer shell to securely engage the inner shell by drawing the outer shell and inner shell through a die without the use of a mandrel placed in the inner shell. In another embodiment of the present invention, the method includes inserting an inner shell into an outer shell and reducing the outer shell to securely engage the inner shell by sizing the outer shell using at least one roller stand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.