Audited Supplier
| General Introduction |
Changsha Tianhe Drilling Teamwhole can produce wide range of TH bits,range from 3"-47"(76mm-1200mm)in diameter.These DTH bits shank can cover all of international brand like BR,MACH,DHD,COP,IR,NUMA,SD,QL,MISSION etc.
DTH bits are made from high quality alloy steel and advanced heat treatment.Teamwhole brand DTH bits face include concave,flat,drop center,convex etc.
Features:
1.Reliable quality, long service life, rare abnormal breakage during service life.
2.Good flushing effect to ensure high drilling rate
3.Strict quality warranty and compensation rules
Bit Face Shape Selection:
1. Drop Center Bit
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
2. Concave Face
The all-around application bit face specifically for medium hard and homogeneous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Flat Face
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.
| Raw Material |
Steel:
first class special alloy steel with high strength, heat resistance and wearable
Carbide
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
The below is the specification of TEAMWHOLE DHD360-203mm bit specifications
| DTH BIT model | DHD360-203mm bit | ||||
| Diameter | No*Butotn diameter,mm | Flushing holes | Weight | ||
| mm | Inch | Gauge buttons | Front buttons | ||
| 203 | 8 | 10*19MM | 6*18MM+7*16MM | 2 | 31 |
Matched DTH hammer
| Model | Working pressure | Thread Type | Outer diameter |
| Teamwhole TH65/DHD360 | 6 bar ~ 35 Bar | API 3 1/2"Reg Pin | 146mm |
DTH BIT FACE AND CARBIDES SHAPE
Other size of 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 | ||
| Package |
