Concave-Bottom Mill Shoe The concave bottom mill shoe is used to grind downhole small objects and other unstable fallen objects. Technical specifications and parameters
OD (mm)
Connection(Box)
Hole size(mm)
MA89
89
2 3/8 REG
95.2-101.6
MA97
97
NC26
107.9-114.3
MA110
110
117.5-127.0
MA121
121
NC31
130.0-139.7
MA130
130
NC38
142.9-152.4
MA140
140
155.6-165.1
MA156
156
168.0-187.3
MA178
178
NC50
190.5-209.5
MA200
200
212.7-241.3
MA232
232
244.5-269.5
MA257
257
6 5/8 REG
273.1-295.3
MA279
279
298.5-317.5
MA295
295
320.6-346.1
MA330
330
349.3-406.4
MA381
381
7 5/8 REG
406.4-444.5
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