燃气标志桩20米一个。现在天然气正在普及，有利就有弊，天然气也是一种危险的气体，在安装的过程中施工队一定要小心再小心。为了避免其它施工方在进行现场施工的时候不造成危险，所以在安装燃气管道的上方间隔20米安装一根燃气标志桩，以起到警示作用。

　　Each gas marker post is 20 meters long. Nowadays, natural gas is becoming popular, and there are advantages and disadvantages. Natural gas is also a dangerous gas, and the construction team must be careful during the installation process. In order to prevent other construction parties from causing danger during on-site construction, a gas marker post is installed every 20 meters above the installation of the gas pipeline to serve as a warning.

　　注意事项

　　matters needing attention

　　燃气标志桩在设置时，有两种情况，一种是上方可以安装，采取在管道的正上方安装，一种是当管道正上方没有安装条件，但必须安装时，可设置在相对距离较近的路边绿化带内，但要在燃气标志桩上设置管道走向简图，指明管道的具体位置，燃气标志桩的安装间距要求以便于观察为原则，考虑到经济性和实用性。

　　When setting up gas marker piles, there are two situations: one is that they can be installed above the pipeline and should be installed directly above it; the other is that when there are no installation conditions above the pipeline but installation is necessary, they can be set up in a relatively close roadside green belt. However, a schematic diagram of the pipeline direction should be set up on the gas marker pile, indicating the specific location of the pipeline. The installation spacing of gas marker piles should be based on the principle of easy observation, considering economy and practicality.
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　　This article is about gas marker piles. For more information, please click on the http://www.binzhouhengtong.com Sincere attitude. We will provide you with comprehensive service. We will gradually contribute more relevant knowledge to everyone. Stay tuned