This standard specifies the product classification, requirements, test methods, inspection rules and markings, packaging, transportation and storage of explosion-proof dual-purpose wrenches. This standard applies to explosion-proof dual-purpose wrenches (hereinafter referred to as "dual-purpose wrenches") for tightening bolts, nuts or other fasteners in flammable and explosive locations.
QB/T 2613.14-2015 history
2015QB/T 2613.14-2015 Tools for explosive atmospheres.Combination wrenches for explosive atmospheres