Home / Standards / GB/T 30024-2020 GB/T 30024-2020 Active Cranes—Proof of competence of steel structures 起重机 金属结构能力验证 Standard Type GBT ICS 53.020.20 CCS J80 Status 现行 Issue Date 2020-12-14 Implementation 2021-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A