For the huge bulky and difficult adjustment shortcoming of traditional end and side pipe stopper, the wide applicable scope end and side pipe stopper is designed.

针对传统端、侧挡管器体积庞大、调整费时费力等缺陷，设计出一套使用范围较宽的端、侧挡管器。

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The moveable pedestal-type stopper used for pipe seperating and stopping after sizing has the function of adjusting cushioning force according to pipe sizes.

设计的钢管定径后分流和挡料座式活动气动挡料器，可根据钢管规格调整挡料时所产生的缓冲力。

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The special hydraulic valve taking the place of the stopper for gas pipe has improved the efficiency, decreased the intensity and danger in the operation of gas.

在煤气管道上安装液压翻板阀，通过操作翻板代替人工抽堵盲板作业可以提高工作效率，降低劳动强度和作业危险性。

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In the 17th century an ingenious smoker came up with the pipe tamper, or stopper, as it's known in England, a tool for pressing down lit tobacco in the pipe's bowl.

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