Home / Standards / GBT 3098.23-2020 GBT 3098.23-2020 Mechanical properties of fasteners — Bolts, screws and studs with thread diameters M42 to M72 紧固件机械性能 M42_M72螺栓、螺钉和螺柱 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A