6" Down The Hole Rock Drill Bits

• Customization: Available
• Type: Quarry and Mining Drill Bit
• Material: Tungsten Carbide
• Model NO.: DHD350 Cop32 SD QL60/50 mission30 IR3.5 CIR90
• Usage: Masonry Drilling, Use Together with DTH Hammers
• Series: CIR, Br, Cop, DHD, Mission, Ql, SD, Numa
• Aplication: Down The Hole Drilling. Mining, Quarry
• Mining Object: Coal Machinery, Ore, Mining
• Export Markets: Global
• Certificate: ISO2000 and SGS
• Key Word: CIR, Br, Cop, DHD, Mission, Q, SD, Numa, IR
• Drill Diameter: 65-305mm
• Export Experience: 10 Years
• Transport Package: Plywood
• Specification: CE&SGS
• Trademark: Bestlink
• Origin: China
• HS Code: 82071990
• Production Capacity: 5000PCS Per Month

Product Description

BESTLINK High and Low Air Pressure DTH Bits

1. High and low air pressure down-the-hole drill bits
2. Low air pressure holeDia.: 65-220mm
3. High air pressure hole Dia.: 85-305mm
4. Face type: Drop center/concave/convex/double gauge/flat
5. Our DTH Bit can be suitable for many types of DTH Hammer, such as XL, Mission, COP, IR, Mach, Demag, SD, Bulroc, Halco Mach, Digger etc.
6. Inch available: 3", 4", 5", 6", 8", 12", etc...

High pressure dth bit
DTH bit is our company main product. After mang years search, we have rich experience in development and manufacture which adopted high-quality raw materials, advanced craft technology and passed through strictly inspection, manufacturing high quality products.
If you interested in our product please contact freely.


The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Based on order quantity, normally it takes 25 days for production.
Only 2 or 3 days if we have stock on your request size.
3. Shipping way
Sample order: We suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: We suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Services:
1. Our sales team will response for your question within 24 hours (Holidays Excluded)
2. Technical Support will be available in any time
3. Free replacement will provide once the failure confirmed caused by our product quality


About Us:
1. Our factory has been specialized in manufacturing drilling tools and spare parts since 1980.
2. We have advanced technology and equipment.
3. Our technician has more than 25 year's professional working experience.
4. Rock drilling tools are exported throughout the world. Main market: Norway, Turkey, USA,
Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand, India, etc.

Some BITS for referance
Hammer: COP 32
Diameter mm	Part No.	Buttons x Button diam(Gauge outer, Gauge inner, Centre, Cone)	Gauge buttons angle o (Outer, Inner, Cone)	Flushing holes (No. x size mm)	Weight approx. kg	Foot valve Part No.
Flat front, HD
85	100-5085-39,24-20	8x11, - ,6x11, -	35, -, -	2	4.5
90	100-5090-39,24-20	8x11, - ,7x11, -	35, -, -	2	4.7
100	100-5100-39,24-20	8x11, - ,7x11, -	35, -, -	2	4.9
SpeedBit
85	100-5085-39-55,24-20	8x11, - ,6x11, -	35	2	4.5
90	100-5090-39-55,24-20	8x11, - ,7x11, -	35	2	4.7
100	100-5100-39-55,24-20	8x11, - ,7x11, -	35	2	4.9
Convex front, Ballistic
85	100-5085-39-61,24-20	7x11, 4x11, 2x11, -	40, 20, -	2	4.3
90	100-5090-39-61,24-20	7x11, 4x11, 2x11, -	40, 20, -	2	4.5
100	100-5100-39-61,24-20	7x11, 4x11, 2x11, -	40, 20, -	2	4.7
Hammer: Bulroc 3
Diameter mm	Part No.	Buttons x Button diam(Gauge outer, Gauge inner, Centre, Cone)	Gauge buttons angle o (Outer, Inner, Cone)	Flushing holes (No. x size mm)	Weight approx. kg	Foot valve Part No.
Convex front, Ballistic
	100-5090-45-61,24-20	7x11, 4x11, 2x11, -	40, 20, -	2	4
Hammer: COP 34, 34Q
Diameter mm	Part No.	Buttons x Button diam(Gauge outer, Gauge inner, Centre, Cone)	Gauge buttons angle o (Outer, Inner, Cone)	Flushing holes (No. x size mm)	Weight approx. kg	Foot valve Part No.
Flat front, HD
90	100-5090-31,24-20*	8x12.7, - ,7x11, -	35, - , -	2	5.8	9279
92	100-5092-31,24-20	8x12.7, - ,7x11, -	35, - , -	2	5.8	9279
95	100-5095-31,24-20	8x12.7, - ,7x11, -	35, - , -	2	5.9	9279
100	100-5100-31,24-20	8x12.7, - ,7x12.7, -	35, - , -	2	6.1	9279
105	100-5105-31,24-20	8x14.5, - ,7x12.7, -	35, - , -	2	6.3	9279
SpeedBit
92	100-5092-31-55,24-20	8x12.7, - ,7x11, -	35	2	5.8	9279
95	100-5095-31-55,24-20	8x12.7, - ,7x11, -	35	2	5.9	9279
100	100-5100-31-55,24-20	8x12.7, - ,7x12.7, -	35	2	6.1	9279
105	100-5105-31-55,24-20	8x14.5, - ,7x12.7, -	35	2	6.3	9279
Convex front, Ballistic
92	100-5092-31-61,24-20	7x12.7, 4x12.7, 2x12.7, -	40, 20, -	2	5.8
95	100-5095-31-61,24-20	7x12.7, 4x12.7, 2x12.7, -	45, 30, -	2	5.9
100	100-5100-31-61,24-20	7x12.7, 4x12.7, 2x12.7, -	45, 30, -	2	6.1
105	100-5105-31-61,24-20	7x14.5, 4x14.5, 2x14.5, -	45, 30, -	2	6.3
Hammer: COP 42
Diameter mm	Part No.	Buttons x Button diam(Gauge outer, Gauge inner, Centre, Cone)	Gauge buttons angle o (Outer, Inner, Cone)	Flushing holes (No. x size mm)	Weight approx. kg	Foot valve Part No.
Flat front, HD
105	100-5105-60,24-20	8x14.5, 7x12.7, -	35	2	7.5
110	100-5110-60,24-20	8x14.5, 7x12.7, -	35	2	8.2
115	100-5115-60,24-20	8x14.5, 8x12.7, -	35	2	8.4
130	100-5130-60,24-20	8x14.5, 10x12.7, -	35	2	9.3
140	100-5140-60-1218,08-20	8x14.5, 9x12.7, -	35	2	9.3
SpeedBit
105	100-5105-60-55,24-20	8x14.5, - ,7x12.7, -	35	2	7.5
115	100-5115-60-55,24-20	8x14.5, - ,8x12.7, -	35	2	8.4
Convex front, Ballistic
105	100-5105-60-61,24-20	7x14.5, 4x14.5, 2x14.5, -	40, 20, -	2	7.5
110	100-5110-60-61,24-20	7x14.5, 4x14.5, 2x14.5, -	40, 20, -	2	7.8
115	100-5115-60-61,24-20	7x14.5, 4x14.5, 3x14.5, -	40, 20, -	2	8
130	100-5130-60-61,24-20	9x12.7, 6x12.7, 5x12.7, -	40, 20, -	2	9
Hammer: COP 44,440 Ingers oil-Rand DHD 340A, DH4, Minroc 4 valveless, Compair Holman VOL 400
Diameter mm	Part No.	Buttons x Button diam(Gauge outer, Gauge inner, Centre, Cone)	Gauge buttons angle o (Outer, Inner, Cone)	Flushing holes (No. x size mm)	Weight approx. kg	Foot valve Part No.
Flat front, HD
105	100-5105-34,24-20	8x14.5, - ,7x12.7, -	35, - , -	2	8.6
110	100-5110-34,24-20	8x14.5, - ,7x12.7, -	35, - , -	2	8.7
115	100-5115-34,24-20	8x14.5, - ,8x12.7, -	35, - , -	2	9
125	100-5125-34,24-20	8x14.5, - ,10x12.7, -	35, - , -	2	10.5
130	100-5130-34,24-20*	8x14.5, - ,10x12.7, -	35, - , -	2	11
140	100-5140-34-1218,08-20*	8x16.0, - ,9x14.5, -	35, - , -	2	11.5
Hammer: COP 44,440 Cont.
Diameter mm	Part No.	Buttons x Button diam(Gauge outer, Gauge inner, Centre, Cone)	Gauge buttons angle o (Outer, Inner, Cone)	Flushing holes (No. x size mm)	Weight approx. kg	Foot valve Part No.
SpeedBit
110	100-5110-34-55,24-20	8x14.5, - ,7x12.7, -	35, - , -	2	8.7	9237
115	100-5115-34-55,24-20	8x14.5, - ,8x12.7, -	35, - , -	2	9	9237
125	100-5125-34-55,24-20	8x14.5, - ,10x12.7, -	35, - , -	2	10.5	9237
130	100-5130-34-55,24-20	8x14.5, - ,10x12.7, -	35, - , -	2	11	9237
Convex front, Ballistic
105	100-5105-34-61,24-20	7x14.5 4x14.5 2x14.5, -	40, 20, -	2	8.2	9237
110	100-5110-34-61,24-20	7x14.5 4x14.5 2x14.5, -	40, 20, -	2	8.4	9237
115	100-5115-34-61,24-20	7x14.5 4x14.5 3x14.5, -	40, 20, -	2	8.5	9237
115	100-5115-34-2234,08-20	8x12.7 4x12.7 3x12.7, -	45, 30, -	2	9	9237
125	100-5125-34-61,24-20	9x12.7 6x12.7 5x12.7, -	40, 20, -	3	9.1	9237
130	100-5130-34-61,24-20*	9x12.7 6x12.7 5x12.7, -	40, 20, -	3	9.3	9237
Reaming bit for 104-115 mm pilot holes
165	100-5165-34-9102,08-20	14x16	35	2	15.9	9237