Corrosion-resistant, double-wall pipe structures
US4556240A · kind A · utility
44Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1982 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Jul 29, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a corrosion-resistant, double-wall pipe structure formed by tightly fitting a stainless-steel inner pipe in an outer pipe, the inner pipe at any portion thereof which is liable to be adversely affected by heat due to heat processing is replaced by an inner tube of a special metal having corrosion resistance which is not easily impaired by the heat, the inner tube being joined integrally to the remainder portion of the inner pipe of the stainless steel. Examples of the special metal are Inconel 625, Incoloy 825, and Hastelloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.