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How is the pressure mechanism classification of gas transmission and distribution classified?

Author: source: Release Date: 2018-01-06

The State's "Code for Urban Gas Design" (GB50028-2006) stipulates that the pressure mechanism for gas transmission and distribution in China is divided into seven levels:

grade Pressure range
Low pressure P < 0.01MPa
Medium voltage B 0.01MPa≤P≤0.2MPa
Medium voltage A 0.2MPa < P≤0.4MPa
Sub-high pressure B 0.4MPa < P≤0.8 MPa
Sub-high voltage A 0.8MPa < P≤1.6MPa
High voltage B: 1.6MPa < P≤2.5MPa
High voltage A 2.5MPa < P≤4.0MPa

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