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China water well drilling rig

FM series DTH Bit

                                                                                                                                        
Model Bit Diameter Air Holes Qty*Button Dia(mm) Weight
mm Gauge Front kg
FM4 105 2 6*14 5*13 6
110 2 7*14 6*13 6.2
115 2 7*14 7*13 6.6
120 2 8*14 7*14 7
127 2 8*14 7*14 7.4
FM5 135 2 7*18 7*14 12.5
140 2 7*18 7*14 13.5
146 2 8*18 7*14 14
152 2 8*18 8*14 14.4
165 2 8*18 8*16 15
FM6 152 2 8*18 8*16 22.0
165 2 8*18 10*16 23.0
175 2 8*18 10*16 24.0
195 2 10*18 12*16 25.0
203 2 10*18 14*16 28.0
FM8 195 3 10*18 13*16 35.0
203 2 10*18 14*18 40.0
216 2 12*18 18*16 54.0
254 3 12*18 21*16 57.0
305 4 12*18 29*16 77.0

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