Home / Standards / GB/T 20863.5-2007 GB/T 20863.5-2007 Active Cranes - Classification - Part 5: Overhead travelling and portal bridge cranes 起重机 分级 第5部分: 桥式和门式起重机 Standard Type GBT ICS 53.020.20 CCS J80 Status 现行 Issue Date 2007-03-21 Implementation 2007-08-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A