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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 34041.1-2017 |
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 |
China National Standards conduits—Ultrasonic |
 English PDF |
| GB/T 34041.2-2017 |
Measurement of fluid flow in closed conduits—Ultrasonic meters for gas—Part 2: Meters for industrial applications 封闭管道中流体流量的测量 气体超声流量计 第2部分：工业测量用气体超声流量计 |
China National Standards conduits—Ultrasonic |
English PDF |
| GB/T 35138-2017 |
Measurement of fluid flow in closed conduits—Ultrasonic transit-time meters for liquid 封闭管道中流体流量的测量 渡越时间法液体超声流量计 |
China National Standards conduits—Ultrasonic |
English PDF |
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