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UNDER REAMER

液压随钻可变径扩孔器
随钻可变径扩孔器

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CEMENTING TOOLS
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  Under reamer is a tool to enlarge the hole size in drilling operation and save the trip times, this under reamer is mechanically expandable, so it can expediently control the cutters to expand and shrink when drilling. It has the advantages of ingenious structure, convenient control and flexible action features. 

 

 

 

 

 

 

 

 

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