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不锈钢管道削口有什么用???

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不锈钢管道削口有什么用???
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楼上说的有道理,有的是提前在制造厂就削好了, 有的是在工地现场去削。
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women cheat because cheaters caught wife cheated
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是不是坡口
作用就是方便管道与管件或法兰的焊接
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I cheated on my girlfriend My girlfriend cheated on me what makes women cheat
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