Composition, and threaded connection for pipes including lubricant coating layer formed from the composition
AssigneeNippon Steel Corporation
InventorsKunio GOTO, Tomoka ABE
Life of this patent
Estimating the term…
Abstract
The composition according to the present disclosure is a composition for forming a lubricant coating layer on or above a threaded connection for pipes, and contains polyisobutylene, a metal soap, a wax and a basic metal salt of an aromatic organic acid. The threaded connection for pipes according to the present disclosure includes: a pin having a pin-side contact surface which includes a pin-side threaded portion; a box having a box-side contact surface which includes a box-side threaded portion; and a lubricant coating layer formed from the aforementioned composition as an outermost layer on or above at least one of the pin-side contact surface and the box-side contact surface.
Claims19
1-16. (canceled)
A composition for forming a lubricant coating layer on or above a threaded connection for pipes, the composition comprising:
- polyisobutylene,
- a metal soap,
- a wax, and
- a basic metal salt of an aromatic organic acid.
Dependencies are inferred from the claim text.