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Brand Name : MIROC
Model Number : DTH380, length 1550mm, thread API 4 1/2"
Certification : API
Place of Origin : Shan Dong China(Mainland)
MOQ : 1 piece
Price : USD 35-1500 pieces
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability : 8000 pieces per month
Delivery Time : 1-25 days
Packaging Details : Carton or Wooden Box
Type : Drill bit,dth hammer
Material : Tungsten Carbide And High Strength Alloy Steel
Processing : CNC milling and proprietary heat treatment
Series : CIR, BR, COP,DHD,MISSION,QL,SD,NUMA
Color : Green,blue,golden etc
Impact/min : 860-1510
Bit Shank : DHD340, QL40 and so on.
Diameter : 89 - 510mm
High Pressure Down Hole Hammer Bit / DTH380 Length 1550mm Thread API 4 1/2"
In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since the piston is in direct contact with the drill bit, little energy is lost. This gives DTH drilling a nearly constant penetration rate regardless of hole length.
DTH bits are paired with their corresponding hammers (by drilling hole diameter and spline configuration). Customers can customize their DTH bits in various ways, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.
• Medium to large size drilling diameters
• Works in high pressure range, capable of drilling deep hole lengths
Competitive Advantage
• High grade tungsten carbide inserts
• Bit bodies manufactured from high grade steel and processed using state-of-the-art CNC machinery and heat treatment
Applications of DTH Bit
• Underground mining
• Tunneling
• Quarry benching operations
Specification of DTH Bits
Product Code and Brief Description | Flushing Holes | Diameter (mm) | Weight (kg) | Gauge Buttons ( No.x mm) | Front Buttons ( No. x mm) |
DTH65PQ | 1 | 68 - 72 | 1.5 | 4 x12 | 3 x 12 |
DTH75PQ | 3 | 75 - 77 | 2.4 | 5 x 12 | 3 x 12 |
DTH76PQ | 2 | 76 - 78 | 2.5 | 5 x 12 | 3 x 12 |
DTH76-78 | 2 | 78 - 82 | 2.6 | 5 x 12 | 3 x 12 |
DTH80PQ | 3 | 82 - 84 | 3 | 5 x 12 | 6 x 12 |
DTH90A | 3 | 90 - 95 | 3.6 | 6 x 14 | 4 x 12 |
DTH80XD-90 | 3 | 90 - 95 | 3.4 | 6 x 12 | 4 x 12 |
DTH80-II-80 | 3 | 80 - 82 | 3 | 5 x 12 | 4 x 12 |
DTH90B | 3 | 90 - 95 | 3.8 | 6 x 14 | 4 x 12 |
DTH90T1 | 2 | 90 - 95 | 3.6 | 6 x 14 | 1 x 12, 3 x 12 |
DTH90T2 | 2 | 90 - 95 | 3.8 | 6 x 14 | 4 x 12 |
DTH90T3J | 3 | 90 - 95 | 3.6 | 6 x 14 | 4 x 12 |
Technical Manual of DTH Hammer
Model | Drilling Diameter (mm) | Length (mm) | External Diameter (mm) | Working Pressure (Mpa) | Torque (N.m) | Impact Frequency (n/min) |
DTH65B | ø68 - 70 | 745 | ø61.2 | 0.5 - 0.7 | 51 | ≥810 |
DTH70 | ø72 - 74 | 803 | ø67.2 | 0.5 - 0.7 | 70 | ≥810 |
DTH76 | ø74 - 76 | 766 | ø67.2 | 0.5 - 0.7 | 75 | ≥810 |
DTH80 | ø80 - 82 | 796 | ø72 | 0.5 - 0.7 | 81 | ≥800 |
DTH80-II | ø75 - 80 | 756 | ø67 | 0.5 - 0.7 | 75 | ≥810 |
DTH80X | ø80 - 82 | 756 | ø72 | 0.5 - 0.7 | 75 | ≥800 |
DTH80XD | ø80 - 90 | 735 | ø74 | 0.5 - 0.7 | 85 | ≥800 |
DTH90 | ø90 - 130 | 796 | ø80.2 | 0.5 - 0.7 | 110 | ≥820 |
DTH90-I | ø90 - 130 | 796 | ø80 | 0.5 - 0.7 | 120 | ≥820 |
DTH110 | ø110 - 150 | 838 | ø98 | 0.5 - 0.7 | 180 | ≥830 |
DTH150 | ø150 - 185 | 908 | ø137 | 0.5 - 0.7 | 340 | ≥800 |
DTH170 | ø170 - 250 | 1023 | ø156 | 0.5 - 0.7 | 420 | ≥790 |
DTH930 | ø90 - 120 | 870 | ø80.5 | 0.8 - 1.2 | 180 | ≥700 |
DTH4.5 | ø110 - 150 | 917 | ø98 | 0.8 - 1.2 | 300 | ≥800 |
DTH330 | ø82 - 85 | 867 | ø71 | 0.8 - 2.1 | 150 | ≥800 |
DTH335 | ø90 - 93 | 908 | ø81 | 0.8 - 2.1 | 205 | 950 - 1500 |
DTH340 | ø105 - 130 | 1052 | ø92 | 0.8 - 2.1 | 304 | ≥800 |
DTH345 | ø105 - 130 | 1034 | ø98 | 0.8 - 2.1 | 335 | ≥800 |
DTH345K | ø110 - 130 | 994 | ø98 | 0.8 - 2.1 | 400 | ≥820 |
DTH350 | ø130 - 152 | 1387 | ø114 | 0.8 - 2.1 | 590 | 810 - 1470 |
DTH355 | ø130 - 152 | 1220 | ø124 | 0.8 - 2.1 | 700 | 810 - 1500 |
DTH355K | ø130 - 152 | 1098 | ø124 | 0.8 - 2.1 | 800 | 840 - 1500 |
DTH360 | ø152 - 305 | 1450 | ø136 | 0.8 - 2.1 | 822 | 820 - 1475 |
DTH380 | ø203 - 350 | 1551 | ø181 | 0.8 - 2.1 | 1560 | 860 - 1510 |
DTH3120 | ø302 - 508 | 1934 | ø275 | 0.8 - 2.1 | 2410 | 980 - 1446 |
DTH440 | ø115 - 130 | 998 | ø98 | 0.8 - 2.1 | 402 | 850 - 1320 |
DTH450 | ø130 - 152 | 1087 | ø118 | 0.8 - 2.1 | 840 | 850 - 1600 |
DTH460 | ø165 - 216 | 1076 | ø146 | 0.8 - 2.1 | 980 | 860 - 1610 |
DTH480 | ø203 - 254 | 1450 | ø181 | 0.8 - 2.1 | 1870 | 1100 - 1350 |
DTHF335 | ø90 - 105 | 1143 | ø85 | 0.7 - 2.1 | 475 | ≥800 |
DTHF345 | ø110 - 130 | 1281 | ø105 | 0.7 - 2.1 | 600 | ≥800 |
DTHF355 | ø135 - 155 | 1292 | ø124 | 0.8 - 2.1 | 791 | 810 - 1200 |
DTHF365 | ø160 - 200 | 1345 | ø154 | 0.8 - 2.1 | 950 | 600 - 1100 |
DTHF385 | ø200 - 254 | 1578 | ø190 | 0.8 - 2.1 | 1040 | 660 - 1208 |
DTHF3105 | ø254 - 311 | 1440 | ø250 | 0.8 - 2.4 | 1260 | 600 - 1230 |
DTHF3125 | ø311 - 360 | 1430 | ø270 | 0.8 - 2.4 | 1250 | 600 - 1150 |
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High Pressure DTH380 Length 1550mm Thread API 4 1/2" Down Hole Hammer Bit Images |