Home / Standards / GB/T 24740-2009 GB/T 24740-2009 Active Technical product documentation - Symbol of mechanical manufacture orientation and clamping 技术产品文件 机械加工定位、夹紧符号表示法 Standard Type GBT ICS 01.100.01 CCS J04 Status 现行 Issue Date 2009-11-30 Implementation 2010-09-01 Responsible Dept 国家标准委 Drafting Unit N/A