API Working and Master Gauges

We are offering api american petroleum institute working and master gauges.
1) high precision the imported cnc thread grinder to the peculiar 60 m s grinding line speed, high-quality imported grinding wheel, wheel assurance the thread single parameter tolerance zone can reach the midline requirements, thus ensuring the thread type surface straightness reach 0.003mm thread profile the ideal entity status.
2) it is the standard ideal entity teeth type makes the the thread gauge stability interchangeability, excellent abrasion resistance, user feedback 10000 standoff value is almost no change.especially abrasion resistance from the following aspects to improve.