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China water well drilling rig

NUMA series DTH Bit

                                                                                                                                                      NUMA series DTH Bit


Model Bit Diameter Air Holes Qty*Button Dia(mm) Weight
mm Gauge Front kg
NUMA100 254 2 12*18 21*16 90.0
305 4 12*18 36*16 102.0
311 4 12*18 36*16 104.0
318 4 12*18 38*16 106.0
330 4 14*18 42*16 112.0
NUMA120 305 4 12*18 36*16 152.0
311 4 12*18 36*16 158.0
330 4 16*18 42*16 165.0
346 4 16*19 48*16 178.0
381 4 16*19 48*16 195.0
NUMA125 305 4 12*18 36*16 170.0
311 4 12*18 36*16 173.0
330 4 16*18 42*16 182.0
346 4 16*19 48*16 191.0
381 4 16*19 48*16 200.0

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