标志桩、测试桩、里程桩、警示牌等燃气管道设施安全识别标志；
The safety identification marks for fuel gas pipeline facilities, such as mark stake, test stake, mile stake, warning board, etc. ;
在燃气管道设施的安全控制范围内，建造建筑物或者构筑物，从事打桩、挖掘、顶进作业。
To construct the buildings or structures, or engage in piling, digging or pushing forward underground in the safety control scope of the fuel gas pipeline facilities.
在燃气管道设施的安全控制范围内，建造建筑物或者构筑物，从事打桩、挖掘、顶进作业。
To construct the buildings or structures, or engage in piling, digging or pushing forward underground in the safety control scope of the fuel gas pipeline facilities.
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