welding bevel
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重点介绍了三种焊管端面内外倒角刀盘的设计、安装与对刀，并对各刀盘的特点和应用场合进行了比较。
The design, installment and position of three kinds of cutter adapters used to machining welded steel tube's faces are introduced. Their characteristics and fields of application are also compared.
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