Threaded connection for pipes or tubes and method for producing the threaded connection for pipes or tubes
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United States of America Patent
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Sep 6, 2022
Grant Date -
May 28, 2020
app pub date -
Apr 24, 2018
filing date -
May 22, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
This invention provides a threaded connection for pipes or tubes having high over-torque performance, and a method for producing the threaded connection for pipes or tubes. A threaded connection for pipes or tubes according to the present embodiment includes a pin and a box. The pin and the box include a contact surface including a threaded portion and a metal contact portion. The threaded connection for pipes or tubes includes a solid lubricant coating layer on at least one of the contact surfaces of the pin and the box, the solid lubricant coating layer including a resin, a solid lubricant powder, and Cr2O3.
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