These gages conform to GOST 8867. They are designed for tool-joint thread interference testing for left and right thread drill pipes couplings and pins according to national standard 5286. We offer master and working gages. Gage technical terms are up to the national standard 24672.
When ordering, please specify the gage like this: «Working ring gage for tool-joint thread З-171: ring РЗ-171, ГОСТ 8867.».