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题目类型:[单选]
P130~131,燃气管道的种类
3.根据输气压力分类
我国城市燃气管道根据输气压力一般分为:
(1)低压燃气管道:P<O.01MPa;
(2)中压B燃气管道:0.01MPa≤P≤0.2MPa;
(3)中压A燃气管道:0.2MPa<P≤0.4MPa
(4)次高压B燃气管道:0.4MPa<P≤0.8MPa
(5)次高压A燃气管道:0.8MPa<P≤1.6MPa
(6)高压B燃气管道:1.6MPa<P≤2.5MPa;
(7)高压A燃气管道:2.5MPa<P≤4.OMPa