Threaded joint for steel pipe
US9568126B2 · kind B2 · utility
2Cited by
6References
4Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 4, 2013 |
| Grant date | Feb 14, 2017 |
| Priority date | — |
| Expiry date | Jul 15, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A threaded joint for a steel pipe includes a pin and a box each of which is provided with a contact surface that includes an unthreaded metal contact portion having a seal portion and a threaded portion. This threaded joint includes an ultraviolet ray-curable resin coating film that is formed on the contact surface of at least one of the pin and the box; and an acrylic silicone resin coating film that is formed on at least a portion of a surface of the ultraviolet ray-curable resin coating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.