Joint between two preferably metallic pipes and method of producing said joint
US4669649A · kind A · utility
8Cited by
9References
18Claims
0Family size
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Inventor
Key dates
| Filing date | Nov 21, 1985 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Nov 21, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23P11/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Sealing and cracking problems occur when joining coarse-caliber pipes (1 and 2) for oil or gas, for instance, by means of welding. The problem is solved by using an outer peripheral part (3) and an inner peripheral part (4) at the joint, and applying the latter part (4) by means of explosive welding. At the same time, the outer peripheral part (3) forms a firm joint, due to the action of the explosive welding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.