Method for manufacturing a compound pipe
US5069866A · kind A · utility
9Cited by
12References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of preparing a compound pipe, the wall of which comprises an inner layer of a first material and an outer layer of a second material. Powders of the two materials are isostatically hot pressed to form a cylindrical tubular blank in which the first material forms an inner layer and the second material forms an outer layer, the blank after heating to a suitable temperature being extruded over a mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.