Home / Standards / GB/T 7920.4-2016 GB/T 7920.4-2016 Abolished Concrete machinery terminology 混凝土机械术语 Standard Type GBT ICS 01.040.91;91.220 CCS P97 Status 废止 Issue Date 2016-02-24 Implementation 2016-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A