USES frequency conversion control system, can real time monitoring gas supply lines gas pressure, make the gas supply pipe gas pressure constant, improve the production efficiency and product quality.

采用变频控制系统后，可以实时监测供气管路中气体的压力，使供气管路中的气体的压力保持恒定，提高生产效率和产品质量；

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The cast iron pipe is used for water supply, drainage and gas transmission pipeline.

铸铁管用于给水、排水和煤气输送管线，它包括铸铁直管和管件。

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The buried-pipe laying of steel natural gas line concerns entire urban gas supply system and the safety of people's lives and properties.

钢质天然气管道埋地敷设工程关系到整个城市供气系统和人民生命财产的安全。

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The facility, which is called a "gas governor" and consists of a large slab of concrete, a flue pipe and a control box, is intended to regulate gas supply in the area.

BBC: The gas governor in Oxted