Home / Standards / GB/T 3228-2009 GB/T 3228-2009 Abolished Assembly tools for screws and nuts-machine-operated square drive sockets (“impact”) - Dimensions 螺栓螺母用装配工具 冲击式机动四方传动套筒的尺寸 Standard Type GBT ICS 25.140.10 CCS J48 Status 废止 Issue Date 2009-04-13 Implementation 2010-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会