This standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of explosion-proof F wrenches. This standard applies to explosion-proof F wrenches (hereinafter referred to as "F wrenches") used in flammable and explosive situations.
QB/T 2613.9-2005 history
2005QB/T 2613.9-2005 Tools for explosive atmospheres - Type F wrenches for explosive atmospheres