DTH drill bits QL 80 Water Well Drilling Rigs dth drill bits
diameter 203mm (8 inch )
What diameter of drill bit your needs ?
3 inch 3 1/2 inch 4 1/2 inch 4 5/16 inch 5inch 6 inch 8 inch 8 1/2
What is type of bit shank ?
COP32 COP34 DHD340A DHD350R DHD360 DHD380 QL40 QL50 QL60 QL80
Which type of drill bit face ?
Convex face Flat face Concave face
- High air pressure bit of 138-HD55A,The bit face designs is convex
face,for high penetration rates in soft to medium-hard with low to
medium air pressure,It is the most resistance to steel wash,and may
reduce the load and wear on gauge buttons,but poor hole deviation
control,but poor hole deviation control.
- The shape of the Carbide button shape gauge buttons and front
buttons is domed/round button and parabolic-ballistic button
respectively.The quantity both is 7 .The domed/round button are
usually used as gauge buttons of DTH bits,suitable for very
abrasive and very hard formations.The parabolic-ballistic button
are usually used as gauge buttons and front buttons of DTH
bits,suitable for medium abrasive and hard formations.The shank big
length is 260mm,the total weight is 15.6kg.
High air pressure bit speed and deep depth, it can be used for
drilling more complex materials. It can choose higher cutting
speed, can drill harder materials, multi-layer geometric cutting
end edge, improve drainage performance and maintain small cutting
resistance. In addition to the commonly used right angle handles,
it is available in a variety of shank types, suitable for a variety
of drilling rigs, drilling machines. A high-performance alloy blade
for alloy drills is selected to effectively reduce the chipping and
maintain good wear resistance.
Insufficient Cleaning Of The Well Bore And Excessive Abrasiveness
Often Present Re-Drilling Problems That Can Cause Deformation
Around The Venting Holes And Grooves.
Therefore, It Should Be Ground To Ensure That The Air Can Slam The
Debris In The Drill. Severe Erosion Of The Bit Body And Energy
Generated By The Piston Striking The Bit Will Cause The Alloy
|Diameter||Face Type||Buttons x Dia (Inch)||Flushing|
|150||5 7/8||Concave||8 x 5/8”||4 x 5/8”||4 x 5/8”||2||24.5||54|
|152||6||Concave||8 x 5/8”||4 x 5/8”||4 x 5/8”||2||24.5||54|
|152||6||Concave||8 x 5/8”||8 x 5/8”||2||24.5||54|
|156||6.125||Concave||8 x 5/8”||4 x 5/8”||4 x 5/8”||2||24.5||54|
|156||6 1/8||Flat Face||8 x 5/8”||8 x 5/8”||2||24.5||54|
|159||6 1/4||Concave||8 x 5/8”||4 x 5/8”||4 x 5/8”||2||25||55|
Product photos :