GB50028-2006《城镇燃气设计规范》规定:超高压:1.6MPa<p≤4MPa
A级:0.8MPa<p≤1.6MPa高压 B级:0.4MPa<p≤0.8MPa A级:0.2MPa<p≤0.4MPa中压 B级:0.005MPa<p≤0.2MPa低压:p≤0.005MPa (500mm水柱)
GB50028-2006《城镇燃气设计规范》规定:超高压:1.6MPa<p≤4MPa
A级:0.8MPa<p≤1.6MPa高压 B级:0.4MPa<p≤0.8MPa A级:0.2MPa<p≤0.4MPa中压 B级:0.005MPa<p≤0.2MPa低压:p≤0.005MPa (500mm水柱)
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