Gold Member Since 2014
Audited Supplier
Xiamen Bestlink Factory Co., Ltd.

Down The Hole Drill Bits, Bits Drilling Down The Hole, Bits DTH manufacturer / supplier in China, offering CIR90 Low Air Pressure DTH Drilling Tools for Construction, Yt24 Air Leg Rock Drill Machine for Breaking Rocks, Yt28 Air Leg Pneumatic Rock Drilling Machine and so on.

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CIR90 Low Air Pressure DTH Drilling Tools for Construction

FOB Price: US $1,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1,000/ Piece
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Port: Xiamen, China
Production Capacity: 5000 PCS / Month
Payment Terms: L/C, T/T, Western Union, Money Gram

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Basic Info
  • Model NO.: CIR90
  • Certification: ISO9001
  • Type: Center Drill Bit
  • Usage: Well Drilling
  • Machine Type: Drilling Tools
  • Function: Rotation Impact Drilling
  • Hole Diameter: 65mm - 220mm
  • Transport Package: Wooden Case
  • Origin: Xiamen, China
  • Customized: Customized
  • Length: Stub-length
  • Material: Tungsten Carbide
  • Model Number: CIR65-90
  • Application: Energy, Transportation, Metallurgy, Building etc.
  • Condition: New
  • Trademark: BESTLINK
  • Specification: ISO
  • HS Code: 82071990
Product Description
CIR90 Low Air Pressure DTH Drilling Tools for Construction

DTH bit is our main product. After many years searched, we have rich experience in development and manufacturing high quality products, which adopted high-quality raw materials, advanced technology and passed through strictly inspection.
1.high and low air pressure down-the-hole drill bits 
2.Low air pressure hole Dia.:65-220mm  
3.Face type: drop center / concave / convex / double gauge / flat  

Technical Data:
CIR series low air pressure DTH bits:
TypeDia.Spline No.Weight (Kg)
CIR656862.5
CIR707663.4
CIR808363.45
CIR80X8363.5
CIR909063.5
CIR9010064.5
CIR9013069.5
CIR11011066.4
CIR11012368.5
CIR110W11066.5
CIR110W12368.8
CIR150155612
CIR150A155612.5
CIR150A165614
CIR170175615.5
CIR170A185616
CIR200W200648
 
J series low air pressure DTH bits:
TypeDia.Spline No.Weight (Kg)
J60C6542.26
J70C7542.8
J80B8543.2
J80B9044.8
J100B11045.04
J100B11545.5
J100B12046.25
J150B155414
J150B160415.5
J150B165422
J170B170424.5
J170B180428.6
J200B210443.5
J200B220445
 
----Selection of DTH BIT FACE SHAPE AND CARBIDE BUTTON SHAPE---- 
 
A: Bit face shape selection

DropCenter Bit
For high penetration rates in soft to medium-hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
Concave face
The all-round application bit face specifically for medium hard and homogenerous rock formations. Good hole deviation control and good flushing capacity.
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.
Double Gauge face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
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.
 
B: Insert Carbide Button Shape Selection
 
Matching the insert to the job requirements is essential in achieving the desired results.  Different buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels.  In general, the larger the number of gauge buttons the better overall performance, especially in hard rock.
 
Hemispherical
? Height 0.5 Ø
? Application Strength - multipurpose
? Best suited to hard ground
? 25,000 to 45,000 PSI (170 to 300 MPa)
? Abrasive to very abrasive
Ballistic Button
? Height 0.75 Ø
? Application Strength - fast penetration
? Best suited to soft ground
? 10,000 to 20,000 PSI (70 to 140 MPa)
? Non abrasive ground
Parabolic Button (semi ballistic)
? Height 0.6 Ø
? Application Strength - fast penetration
? Best suited to medium ground
? 15,000 to 25,000 PSI (100 to 170 MPa)
? Mildly abrasive ground
Conical Button
? Height 0.65 Ø
? Application Strength - fast penetration
? Suited for all non-abrasive ground types
? Smaller contact area
? Best suited for smaller diameter bits
 
 
 
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