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Rolling-Ball Flat-Bottom Mill Shoe

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product description

The rolling--ball flat--bottom mill shoe whose bottom face is overlaid with YD alloy is used to fully grind junks which is stuck downhole and impossible

to be caught. Additionally, rolling balls which are dressed on cylinder face of mill shoe can guarantee the mill shoe not to mill casing inside wall during milling operation in hole.

 

Technical specifications and parameters

 

Type

Outside size

Connection

Casing Size

GQM140

118*460

NC31

5  1/2"

GQM168

146*480

NC38

6  5/8"

GQM178

155*500

NC38

7"

 

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