Home / Standards / GB 5144-1994 GB 5144-1994 Abolished Safety code for tower cranes 塔式起重机安全规程 Standard Type GB ICS 53.020.20 CCS P97 Status 废止 Issue Date 1994-10-18 Implementation 1995-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A