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See Chinese contents: JB/T 9023.1-2019 JB/T 9023.1-2019: Downhole Drill - Part 1: Open-Cut Type
This Part of JB/T 9023 specifies the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of downhole drills for open-cut type. This Part is applicable to downhole drills (hereinafter referred to as drills) used for drilling blasting holes in open-pit projects such as open-pit mining, water conservancy construction, railway and national defense construction.
