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See Chinese contents: SY/T 5164-2016 SY/T 5164-2016: Roller cone drill bits
This standard specifies the classification, model and basic dimensions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of roller cone drill bit. This standard is applicable to roller cone drill bits for oil and gas drilling, it is also suitable for roller cone drill bits for drilling in geology, mining, hydrology, salt, geothermal and other industries.
