PP-R flow pipe is one type of the advanced flow pipe used abroad widely now in the world.

聚丙烯（PP-R）管材是目前国际上广泛应用的先进供水管材之一。

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In liquid, gas or powder medium flow pipe, need different kinds of medium flow valve cut or control.

在液体、气体或粉末介质流动的管道中，需要不同种类阀门对介质的流动进行切断或控制。

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This article details the inportance of the valve in the project, flow pipe system and installation technique.

主要从工程应用、供水管路系统、安装工艺等方面，详细介绍了阀门在供水管道中的重要性。

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One pipe lets water flow into the system.

VOA: special.2009.04.20

That allows the gas to flow back up the pipe.

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Think about what this advancement has meant just in terms of access to the resources: When drilling into a hydrocarbon bearing formation 100 feet thick, vertical drilling would allow an operator to contact 100 feet of rock, which would limit your potential recovery to whatever oil or gas would flow into that length of pipe.

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Power is equal to the flow of water out of the pipe, which depends on both variables.

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