Home / Standards / GB/T 3390.2-2013 GB/T 3390.2-2013 Active Hand operated socket wrenches - Driving squares 手动套筒扳手 传动方榫和方孔 Standard Type GBT ICS 25.140.30 CCS J47 Status 现行 Issue Date 2013-11-12 Implementation 2014-05-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A