Carbon steel-concrete/cement mortar-stainless steel composite submarine pipeline
US11592124B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2018 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Jun 9, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2597/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A carbon steel-concrete/cement mortar-stainless steel composite submarine pipeline belongs to the technical field of marine structure engineering. The composite submarine pipeline is formed by connecting several composite sub-pipelines arranged sequentially along an axial direction of the pipeline, each composite sub-pipeline has an identical structure and includes an outer carbon steel pipe and an inner stainless steel pipe each having a circular cross section and concentrically placed, concrete or cement mortar is filled between the outer carbon steel pipe and the inner stainless steel pipe to form a sandwiched structure with a circular ring-shaped cross section. Between two adjacent composite sub-pipelines, the welding line of the inner stainless steel pipelines is covered by the concrete/cement mortar, and the fatigue performance of the inner stainless steel pipes at the welding line can be improved effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.