Open piping attached to a filled tank will not start to drip-leak following installation and test of a Chemtrol Tru-Bloc shut-off valve.

在Chemtrol Tru-Bloc关闭阀安装和测试后，连接到满储的储罐的管道开口将不会开始滴漏。

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Carbo Ceramics is a leader in making what's called ceramic proppant, which is the synthetic material, sand-based often, with chemicals that are injected into the fractured rock to hold open the cavities so the natural gas goes up into the piping that captures it.

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