Home / Standards / GB/T 9142-2021 GB/T 9142-2021 Active Building construction machinery and equipment—Concrete mixer 建筑施工机械与设备 混凝土搅拌机 Standard Type GBT ICS 91.220 CCS P97 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A