Home / Standards / GB/T 25629-2021 GB/T 25629-2021 Active Hydraulic excavator—Central turning joint 液压挖掘机 中央回转接头 Standard Type GBT ICS 53.100 CCS P97 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A