Home / Standards / GB/T 25896.3-2010 GB/T 25896.3-2010 Active Graphical symbols for use on equipment - Cranes - Part 3: Tower cranes symbols 设备用图形符号 起重机 第3部分:塔式起重机符号 Standard Type GBT ICS 01.080.20 CCS A22 Status 现行 Issue Date 2011-01-10 Implementation 2011-07-01 Responsible Dept 国家标准委 Drafting Unit N/A