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See Chinese contents: GB/T 9766.6-2021 GB/T 9766.6-2021: Test method for tyre valve -- Part 6: Test method for core
This document specifies the test equipment and instruments, installation, air-tightness test, torque test, fatigue resistance test, ventilation rate test, corrosion resistance test, connection test between core cap and core body, opening pressure test and core rod head position measurement of tyre valve core.
