Customization: | Available |
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After-sales Service: | Available |
Warranty: | One Year |
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General Introduction |
Changsha Tianhe Drilling Teamwhole specializes in the production of high-quality DTH (Down The Hole) bits. Our range of TH bits covers diameters from 3" to 47" (76mm-1200mm). Our DTH bits are compatible with international brands such as BR, MACH, DHD, COP, IR, NUMA, SD, QL, MISSION, and more.
Raw Material |
Our DTH Bit is made from first-class special alloy steel, ensuring exceptional strength, heat resistance, and wear resistance. It is designed to meet the high standards of English-speaking natives.
The best tungsten carbides from China are commonly applied in the manufacturing of our DTH Bit, guaranteeing superior performance and durability. Additionally, we also offer tungsten carbide options sourced from Europe, providing customers with a variety of choices.
Company Name: Changsha Tianhe Drilling Tools and Machinery Co., Ltd.
Material: Steel
Carbide Options: Best tungsten carbides from China, also available from Europe
Please contact us for more information on other available sizes of our DTH Bit.
Matched DTH Hammer inch |
Bit diameter | Qty*Button Dia(mm) | Air holes | Weight | Bit shank | ||
mm | inch | Gauge | Front | pcs | kg | ||
2" | 70mm | 2 3/4" | 6*10mm | 4*8mm | 2 | 3 | BR2 |
76mm | 3" | 6*12mm | 5*10mm | 2 | 3.6 | ||
3" | 95mm | 3 3/4" | 6*14mm | 4*13mm | 2 | 4.5 | BR3,BR33,COP32 |
102mm | 4" | 6*14mm | 5*13mm | 2 | 5.9 | ||
3.5" | 90mm | 3.5" | 6*14mm | 4*13mm | 2 | 4.9 | DHD3.5 |
102mm | 4" | 6*14mm | 5*13mm | 2 | 5.9 | ||
4" | 105mm | 4 1/8" | 7*14mm | 6*13mm | 2 | 8 | DHD340,COP44 QL40,M40,SD4 |
130mm | 5" | 8*14mm | 7*14mm | 2 | 10 | ||
5" | 140mm | 5.5" | 7*18mm | 7*14mm | 2 | 15.5 | DHD350,QL50,SD5 M50 |
152mm | 6" | 8*18mm | 8*14mm | 2 | 16.5 | ||
6" | 165mm | 6 1/2" | 8*18mm | 8*16mm | 2 | 24.5 | DHD360,SD6,QL60 M60 |
171mm | 6 3/4" | 8*18mm | 4*18mm+4*16mm | 2 | 25 | ||
8" | 203mm | 8" | 9*18mm | 6*18mm+4*16mm | 3 | 46 | DHD380,SD8,QL80 M80 |
254mm | 10" | 10*18mm | 6*18mm+9*16mm | 3 | 60 | ||
10" | 254mm | 10" | 14*18mm | 12*18mm+9*16mm | 3 | 90 | TH10,SD10,NUMA100 |
305mm | 12" | 14*18mm | 14*18mm+11*16mm | 3 | 120 | ||
12" | 350mm | 13 3/4" | 15*19mm | 24*19mm+15*16mm | 3 | 190 | DHD112,SD12, NUMA120,NUMA125 |
400mm | 15 3/4" | 30*19mm | 18*19mm+22*16mm | 3 | 230 | ||
14" | 430mm | 17" | 30*20mm | 18*19mm+25*16mm | 3 | 245 | TK14,NUMA125 |
560mm | 22" | 36*20mm | 60*19mm | 3 | 300 | ||
18" | 550mm | 21 5/8" | 48*19mm | 90*18mm | 6 | 560 | TK18,NUMA180 |
700mm | 27.5" | 48*20mm | 60*19mm+73*18mm | 6 | 740 | ||
24"" | 780mm | 30 3/4" | 54*20mm | 66*20mm+90*18mm | 6 | 1265 | TK24,NUMA240 |
1000mm | 39" | 78*20mm | 154*18mm | 6 | 1500 |
Changsha Tianhe Drilling Tools and Machinery Co., Ltd. offers the Rock Drill Bit Mission50 DHD350 Ql50 SD5, perfect for water well drilling, geothermal hole drilling, and hole blasting. This high-quality drilling tool is suitable for mining drilling and water well applications. It comes with a one-year warranty and is ISO 9001:2015 certified.
DTH hammers specifications:
Hammers | Bit Shank | Connection Thread | Suitable bit | Working pressure | Air consumption | |
1-3" Middle-low pressure DTH hammers |
BR1 BR2 BR3 |
RD40 box RD50 box API 2 3/8" Reg |
Φ64-Φ76mm Φ70-Φ90mm Φ90-Φ110mm |
0.7-1.75Mpa | 0.7 Mpa | 4.5 m3/min |
1.0 Mpa | 4 m3/min | |||||
1.4 Mpa | 5 m3/min | |||||
3" hammers | DHD3.5 COP32/COP34 M30 |
API 2 3/8"Reg | Φ90-Φ110mm | 1.0-1.5Mpa | 1.0 Mpa | 4.5 m3/min |
1.5 Mpa | 9 m3/min | |||||
4" hammers | DHD340 COP44 QL40 SD4 M40 |
API 2 3/8"Reg | Φ105-Φ130mm | 1.0-2.5Mpa | 1.0 Mpa | 6 m3/min |
1.8 Mpa | 10 m3/min | |||||
2.4 Mpa | 15 m3/min | |||||
5" hammers | DHD350 COP54 QL50 SD5 M50 |
API 2 3/8"Reg API 3 1/2"Reg |
Φ130-Φ156mm | 1.0-2.5Mpa | 1.0 Mpa | 9 m3/min |
1.8 Mpa | 15 m3/min | |||||
2.4 Mpa | 23 m3/min | |||||
6" hammers | DHD360 COP64 QL60 SD6 M60 |
API 3 1/2"Reg | Φ152-Φ203mm | 1.0-2.5Mpa | 1.0 Mpa | 10 m3/min |
1.8 Mpa | 20 m3/min | |||||
2.4 Mpa | 28.5 m3/min | |||||
8" hammers | DHD380 COP84 QL80 SD8 M80 |
API 4 1/2"Reg | Φ200-Φ279mm | 1.0-2.5Mpa | 1.0Mpa | 15m3/min |
1.8Mpa | 26m3/min | |||||
2.4Mpa | 34m3/min | |||||
10" hammers | SD10 NUMA100 |
API 6 5/8"Reg | Φ254-Φ330mm | 1.0-2.5Mpa | 1.0Mpa | 22m3/min |
1.8Mpa | 40m3/min | |||||
2.4Mpa | 55m3/min | |||||
12" hammers | DHD1120 SD12 NUMA120 NUMA125 |
API 6 5/8"Reg | Φ305-Φ381mm | 1.0-2.5Mpa | 1.0Mpa | 30m3/min |
1.8Mpa | 56m3/min | |||||
2.4Mpa | 78m3/min |
Package |