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Large Hole Piling Drilling Down Hole Hammer Drill Bits TH28-1000MM Diameter

Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
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Address: No. 018, Yaojiapo Road., Jinzhou New District, Ningxiang County

Contact name:Spring Huang

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Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.

Large Hole Piling Drilling Down Hole Hammer Drill Bits TH28-1000MM Diameter

Country/Region china
City & Province jinzhou ningxia
Categories Air Drills
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Product Details

TK18 TH18 SD18 Numa180-495mm 525mm 580mm 660mm 680mm DTH Drill Button Bits For DTH Drill rig use

 

About Changsha Tianhe Drilling---

Manufacturer---rock drilling tools, like DTH hammers and bits, DTH drill pipes, RC hammers and bits, tophammer button bits, coupling, cross bits, drill rods located in Changsha, Hunan, China.
Experience--in this field of DTH hammers and bits for 20 years.

Export countries---our customers from all over the world, such as France, Spain, Italy, South Africa, Iran, Malaysia, Australia ad etc.

 

1. TK28 DTH Bit specification

Bit ShankBit Dia.(mm)NO.AirGaugeFrontWeight(Kg)Part No.
HolesButtonsButtons
TH28800654*Φ2066*Φ20+90*Φ181363TH28-800
900660*Φ2066*Φ20+105*Φ181536TH28-900
1000668*Φ2074*Φ20+123*Φ181804TH28-1000
1100676*Φ2284*Φ20+140*Φ182117TH28-1100
1200686*Φ2296*Φ20+159*Φ182300TH28-1200
  • Other size from 800mm to 1000mm are available

2. DTh Bit Shank can be available:

1), Dia. 64mm-70mm shank Bulroc BR1
2), Dia. 70mm-95mm shank Halco MACH20, Bulroc BR2
3), Dia. 90mm-102mm shank COP32, COP34, Halco MACH303, M30, DHD3.5, Bulroc BR3
4), Dia. 105mm-152mm shank COP44, DHD340, Halco MACH44, SD4, M40, QL40, Bulroc BR4
5), Dia. 135mm-165mm shank COP54, DHD350R, COP54, Halco MACH50, SD5, M50, QL50, Bulroc BR5
6), Dia. 152mm-254mm shank COP64, DHD360, SD6, M60, QL60, Bulroc BR6
7), Dia. 203mm-330mm shank COP84, DHD380, SD8, QL80
8), Dia. 254mm-380mm shank SD10, Numa100
9), Dia. 305mm-508mm shank DHD1120, SD12, N120, N125
10), Dia. 500mm-700mm shank SD18 TH18 NUMA180

11) Dia. 600mm-800mm shank TH24 NUMA240

12) Dia. 800mm-1000mm shank TH28 

 

3. Bit Face Shape Selection:

1) Drop Center Bit

----For high penetration rates in soft to medium hard and fissured rock formations. 

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 theload and wear on the gauge buttons, but poor hole deviation control.

4) Flat Face Bit

----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.

 

4. Carbide Button Shape Selection:

1. Semi-Ballistic Buttons

2. Ballistic Button

3. Spherical Button

4. Two-step Button

 

5. Photos:

 

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