Home / Standards / GB/T 13930-2024 GB/T 13930-2024 Active Water ring vacuum pumps and comprssors—Method for measurement of volume flow of gas 水环真空泵和水环压缩机 气量测定方法 Standard Type GBT ICS 23.080 CCS J 71 Status 现行 Issue Date 2024-04-25 Implementation 2024-08-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A