Directly Supply Br3 DTH Drill Bit 85mm 90mm 105mm 110mm

• Customized: Customized
• Standard: API
• Length: Taper-length
• Type: Twist Drill Bit
• Material: High Carbon Steel
• Usage: Well Drilling
• Model NO.: BR3
• After-Sales Service: Online Service
• Warranty: 3 Months
• Surface Treatment: Spray-Paint
• Model No.: DHD350
• Transport Package: Standard Export Packing.
• Specification: 3.5 inch
• Trademark: Qideli
• Origin: Fujian, China
• HS Code: 8207199000
• Production Capacity: 5000 Per Month

Product Description

Product Description

We are capable to design and manufacture according to customer's requirement on the Bit Dia\No., Air holes, carbide button shape and the bit face shape. High air pressure and low air pressure. Thanks to our long year experienced technicians and engineers in the field, whom make this into reality and meet the clients' demand accurately. Our products are widely used in mining, tunneling, quarrying, construction, and civil engineering project.


DTH drill bits
1. Customized acceptable
2. Bit diameter, face shape
3. Carbide button shape
4. qty of air hole
 

Technical Parameters ( BROCA PARA MARTILLO DE FONDO Drill Bits )
Diameter		No x Button diameter, mm		Button angleº		Flushing holes	Weight(kg)	Part No
mm	inch	Gauge Buttons	Front Buttons
76	3	6*13	4*10	38		2*12	3.5	QDL BR3-1
80	3 1/8	6*14	4*11	38		2*12	3.8	QDL BR3-2
82	3 1/4	6*14	4*11	38		2*12	3.9	QDL BR3-3
90	3  9/16	8*12	5*12	38		2*12	4.3	QDL BR3-4

Bit face shape options:
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-round application bit face specifically for medium hard and homogenerous 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. 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.
5. 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.



Carbide button shape selection:
1. Domed/Round Button
Domed/Round Buttons are usually used as gauge buttons of DTH Bits, suitable for every abrasive and very hard formations.
2. Parabolic/Semi-Ballistic Buttons
Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations.
3. Ballistic Button
Ballistic Buttons are usually used as front buttons of DTH Bits, suitable for medium abrasive and mesium hard formations. They can also be used as gauge buttons if the rock is soft.
4. Sharp Button
Sharp Buttons are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible.
5. Flat Button
Flat buttons are usually used as protection buttons to reduce wear on rubbing surfaces of DTH bits.

A.Quick response in 24 hours when there are any further inquiries, complaints,testing feedback.later order confirmation etc.
B.Online Technical support covering dis-assembly, maintenance, operators training, is always available when customers meet the problems in different applications.
C. Quality warranty. Free replacement is offered as long as the hammer is damaged due to our quality problem which is confirmed by our engineer from customer's precise and on-time feedback.
D.Routine Visit. To get to know more of the precise needs and the applications of our distributors and large end customers and meantime to keep good relationship with them, our overseas sales managers work very hard to pay a visit to our customers at least one time per year E.Tailored services like OEM,ODM, and special requests covering painting color, logo, packing etc., are also available.