Method for applying corrosion-protective coating to joint between corrosion-protectively coated steel pipes
US5926936A · kind A · utility
4Cited by
6References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 11, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Oct 11, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49888
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a joint between welded end portions of corrosion-protectively coated steel pipes, a heat-shrinkable tube is positioned so as to cover the outer circumference of a welded portion and the outer circumferences of its adjacent portions, and the heat-shrinkable tube is thermally shrunk in a state in which a gap between the heat-shrinkable tube and the aforementioned portions is kept in a vacuum so that the aforementioned portions are corrosion-protectively coated with the heat-shrinkable outer layer of the heat-shrinkable tube thus thermally shrunk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.