Home / Standards / GB/T 34041.1-2017 GB/T 34041.1-2017 Active Measurement of fluid flow in closed conduits—Ultrasonic meters for gas—Part 1: Meters for custody transfer and allocation measurement 封闭管道中流体流量的测量 气体超声流量计 第1部分:贸易交接和分输计量用气体超声流量计 Standard Type GBT ICS 17.120.10 CCS N12 Status 现行 Issue Date 2017-09-07 Implementation 2018-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A