High temperature field joints
US9810366B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2014 |
| Grant date | Nov 7, 2017 |
| Priority date | — |
| Expiry date | Aug 5, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for forming a high temperature field joint between two insulated pipe sections, and an insulated conduit having a low temperature field joint. The conduit comprises a steel pipe with a corrosion protection coating and a pipe insulation layer comprising a polymer composition having thermal conductivity of less than about 0.40 W/mk, and/or heat resistance to continuous operating temperatures from about 150° C. to above about 205° C. After a circumferential weld joint is formed between the two pipes, a first field joint insulation layer is applied over the joint area, the first field joint insulation layer comprises a polymer composition having heat resistance to continuous operating temperatures from about 150° C. to above about 205° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.