Home / Standards / GB/T 18604-2023 GB/T 18604-2023 Active Measurement of natural gas flow by gas ultrasonic flow meters 用气体超声流量计测量天然气流量 Standard Type GBT ICS 75.180.30 CCS E98 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 国家标准委 Drafting Unit N/A