A disadvantage in compression connections is that they take longer threaded pipe fitting dimensions to make than sweat, and sometimes require retightening over time to stop leaks.

　
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  • 專(zhuān)業(yè)廢變寶，只會(huì )做最好。寶吉牌廢變寶專(zhuān)用機械設備系獨家設計精工制造，竭力為老百姓創(chuàng )造和制造能掙錢(qián)的機遇和機器。
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