T/ZZB 2745-2022 Active

Main technical content: This document specifies the basic parameters and types, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accessories and spare parts, and quality commitments of electric impact wrenches. This document is applicable to single-phase series-excited impact wrenches (hereinafter referred to as electric wrenches) used under general environmental conditions, which employ impact clutch mechanisms and utilize impact torque to complete the assembly and disassembly of threaded parts. This document is not applicable to electric wrenches with fixed torque (current-controlled type) and fixed torque and angle (current and angle-controlled type), multi-head combination electric wrenches, and other specialized electric wrenches used for assembling and disassembling special types of threaded parts (such as ratchet electric wrenches, shearing electric wrenches, etc.)