China Big Size Down The Hole DTH Bit Mdhd275-311-381, Find details about China DTH Bit, Mining Bit from Big Size Down The Hole DTH Bit Mdhd275-311-381
1-2 inch Middle air pressure DTH bits | |||||
Model | Bit Dia.(mm) | NO. X Button Dia. | NO.Air Holes(PCS) | Weight(KG) | |
Gauge | Front | ||||
MDHD25-76 | 76 | 6*Φ13 | 5*Φ10 | 2 | 3.6 |
MDHD25-82 | 82 | 6*Φ14 | 4*Φ11 | 2 | 4.0 |
MDHD25-90 | 90 | 8*Φ12 | 5*Φ12 | 2 | 4.2 |
3 inch hight air pressure DTH bits | |||||
MDDHD32-85 | 85 | 6*Φ13 | 4*Φ12 | 2 | 4.2 |
MDDHD32-90 | 90 | 6*Φ14 | 4*Φ12 | 2 | 4.5 |
MDDHD32-95 | 95 | 6*Φ14 | 4*Φ13 | 2 | 4.7 |
MDDHD32-100 | 100 | 6*Φ14 | 5*Φ12 | 2 | 5.0 |
MDDHD32-105 | 105 | 6*Φ14 | 5*Φ13 | 2 | 5.3 |
MDDHD34-85 | 85 | 6*Φ13 | 4*Φ12 | 2 | 4.2 |
MDDHD34-90 | 90 | 6*Φ14 | 4*Φ12 | 2 | 4.5 |
MDDHD34-95 | 95 | 6*Φ14 | 4*Φ13 | 2 | 4.8 |
MDDHD34-100 | 100 | 6*Φ14 | 5*Φ12 | 2 | 5.0 |
MDDHD34-105 | 105 | 6*Φ14 | 5*Φ13 | 2 | 5.5 |
MDDHD44-105 | 105 | 6*Φ14 | 5*Φ13 | 2 | 8.5 |
MDDHD44-110 | 110 | 7*Φ14 | 6*Φ13 | 2 | 8.8 |
MDDHD44-115 | 115 | 7*Φ14 | 6*Φ13 | 2 | 9.0 |
MDDHD44-120 | 120 | 8*Φ14 | 7*Φ13 | 2 | 9.8 |
MDDHD44-127 | 127 | 8*Φ14 | 7*Φ13 | 2 | 11.0 |
5 inch high air pressure DTH bits | |||||
MDDHD54-135 | 135 | 7*Φ18 | 6*Φ14 | 2 | 15.0 |
MDDHD54-140 | 140 | 7*Φ18 | 7*Φ14 | 2 | 16.0 |
MDDHD54-146 | 146 | 7*Φ18 | 7*Φ14 | 2 | 17.0 |
MDDHD54-152 | 152 | 8*Φ18 | 8*Φ14 | 2 | 17.5 |
MDDHD54-165 | 165 | 8*Φ18 | 8*Φ16 | 2 | 18.5 |
6 inch high air pressure DTH bits | |||||
MDDHD64-152 | 152 | 8*Φ18 | 7*Φ16 | 2 | 22.0 |
MDDHD64-165 | 165 | 8*Φ18 | 8*Φ16 | 2 | 26.0 |
MDDHD64-171 | 171 | 8*Φ18 | 8*Φ16 | 2 | 27.0 |
MDDHD64-190 | 190 | 9*Φ18 | 9*Φ16 | 3 | 28.5 |
MDDHD64-203 | 203 | 9*Φ18 | 11*Φ16 | 3 | 29.5 |
8 inch high air pressure DTH bits | |||||
MDDHD84-203 | 203 | 10*Φ18 | 10*Φ16 | 2 | 40.0 |
MDDHD84-216 | 216 | 10*Φ18 | 12*Φ16 | 2 | 49.0 |
MDDHD84-241 | 241 | 12*Φ18 | 18*Φ16 | 2 | 64.0 |
MDDHD84-254 | 254 | 12*Φ18 | 21*Φ16 | 3 | 71.0 |
MDDHD84-305 | 305 | 12*Φ18 | 29*Φ16 | 4 | 95.0 |
10 inch high air pressure DTH bits | |||||
MDDHD10-254 | 254 | 12*Φ18 | 20*Φ16 | 3 | 108.0 |
MDDHD10-305 | 305 | 12*Φ18 | 36*Φ16 | 4 | 125.0 |
MDDHD10-311 | 311 | 12*Φ18 | 36*Φ16 | 4 | 130.0 |
MDDHD10-318 | 318 | 12*Φ18 | 38*Φ16 | 4 | 142.0 |
MDDHD10-330 | 330 | 16*Φ18 | 42*Φ16 | 4 | 155.0 |
12 inch high air pressure DTH bits | |||||
MDHD1120-305 | 305 | 12*Φ18 | 36*Φ16 | 4 | 152.0 |
MDHD1120-311 | 311 | 12*Φ18 | 36*Φ16 | 4 | 157.0 |
MDHD1120-330 | 330 | 16*Φ18 | 42*Φ16 | 4 | 165.0 |
MDHD1120-356 | 356 | 16*Φ19 | 48*Φ16 | 4 | 178.0 |
MDHD1120-381 | 381 | 16*Φ19 | 48*Φ18 | 4 | 198.0 |
Big size bits using in Waterwells, Oil, Gas and Construction Drilling. | |||||
MDHD275-311 | 311 | 15*Φ18 | 36*Φ16 | 3 | 205.0 |
MDHD275-334 | 334 | 18*Φ19 | 44*Φ18 | 3 | 216.0 |
MDHD275-356 | 356 | 18*Φ19 | 48*Φ18 | 3 | 225.0 |
MDHD275-368 | 368 | 20*Φ19 | 50*Φ18 | 4 | 230.0 |
MDHD275-381 | 381 | 20*Φ19 | 54*Φ19 | 4 | 236.0 |
MDHD330-381 | 381 | 20*Φ19 | 54*Φ18 | 4 | 297.0 |
MDHD330-406 | 406 | 20*Φ19 | 58*Φ18 | 4 | 311.0 |
MDHD330-431 | 431 | 20*Φ19 | 64*Φ18 | 4 | 324.0 |
MDHD330-445 | 445 | 24*Φ20 | 72*Φ18 | 4 | 334.0 |
MDHD330-470 | 470 | 24*Φ20 | 80*Φ18 | 4 | 347.0 |
MDHD475-495 | 495 | 24*Φ20 | 88*Φ18 | 4 | 710.0 |
MDHD475-525 | 525 | 24*Φ20 | 100*Φ18 | 4 | 760.0 |
MDHD475-580 | 580 | 24*Φ20 | 116*Φ18 | 4 | 855.0 |
MDHD475-660 | 660 | 28*Φ20 | 140*Φ19 | 4 | 950.0 |
MDHD475-680 | 680 | 28*Φ20 | 144*Φ19 | 4 | 968.0 |
MDHD525-711 | 711 | 28*Φ20 | 154*Φ19 | 4 | 1455.0 |
MDHD525-762 | 762 | 32*Φ20 | 172*Φ19 | 4 | 1539.0 |
MDHD525-780 | 780 | 32*Φ20 | 180*Φ19 | 4 | 1564.0 |
MDHD525-825 | 825 | 36*Φ20 | 216*Φ19 | 4 | 1625.0 |
MDHD525-998 | 998 | 40*Φ20 | 348*Φ19 | 4 | 1980.0 |