GB/T 32076.3-2015
ActiveHigh-strength structural bolting assemblies for preloading—Part 3: System HR—Hexagon bolt with large width across flats and nut assemblies
预载荷高强度栓接结构连接副 第3部分：HR型 大六角头螺栓和螺母连接副
Application Summary AI generated
This standard specifies the dimensions, mechanical properties, and technical requirements for HR-type high-strength structural bolting assemblies, which consist of hexagon bolts with large width across flats and matching nuts. It is applied in steel structure engineering, such as bridges, buildings, and heavy machinery, where preloaded bolted connections are required to ensure joint integrity under dynamic and static loads. The standard is critical for quality control and compatibility verification during manufacturing, procurement, and field assembly of these fasteners.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.