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| Certification: | ISO 9001:2000, SGS |
| Standard: | GB |
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Down the hole(DTH) tools manufacturer KINGDRILLING supply DTH Drill Bits with QL shank type are available in a wide range of sizes and with a number of custom design features for optimum performance in a rock formation, which are designed to match all conceivable applications for water well industries, mining and construction.
Rock drill bits Shank type:QL30,QL40,QL50,QL60,QL80,QL10,QL12
DTH hammer bits hole diameter: 3'', 4'', 5'', 6'', 8''(85mm-350mm).
DTH drill bits function by utilizing compressed air to drive the drilling mechanism, creating a powerful impact force that fractures rocks and other materials. The basic operation of DTH drill bits involves the following steps:
Drilling Setup: The DTH drill bit is attached to the end of the drill string, which is connected to the drilling rig. The rig provides the necessary power and air pressure for the drilling operation.
Down-The-Hole Drilling: The drill bit is lowered into the borehole, and compressed air is delivered through the drill string to the drill bit. This air pressure powers the piston inside the drill bit, creating a rapid hammering action.
Rock Penetration: The impact force generated by the piston strikes the rock surface, breaking it into small fragments. The rotation of the drill string helps to clear the debris and advance the drilling process.
Sample Retrieval: As the drilling progresses, core samples or cuttings are collected for analysis. This information is crucial for geological surveys, mining exploration, and construction projects.
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3 Inch Hight Air Pressure DTH bits |
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Model |
Bit Dia. (mm) |
NO. X Button Dia. |
NO.Air Holes (PCS) |
Weight (KG) |
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Gauge |
Front |
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MDQL30-85 |
85 |
6*Φ13 |
4*Φ12 |
2 |
4.5 |
|
MDQL30-90 |
90 |
6*Φ14 |
4*Φ12 |
2 |
4.7 |
|
MDQL30-95 |
95 |
6*Φ14 |
4*Φ13 |
2 |
4.9 |
|
MDQL30-100 |
100 |
6*Φ14 |
5*Φ12 |
2 |
5.0 |
|
MDQL30-105 |
105 |
6*Φ14 |
5*Φ13 |
2 |
5.5 |
|
4 inch high air pressure DTH bits |
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MDQL40-105 |
105 |
6*Φ14 |
5*Φ13 |
2 |
9.0 |
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MDQL40-110 |
110 |
7*Φ14 |
6*Φ13 |
2 |
9.2 |
|
MDQL40-115 |
115 |
7*Φ14 |
6*Φ13 |
2 |
9.5 |
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MDQL40-120 |
120 |
8*Φ14 |
7*Φ13 |
2 |
10.3 |
|
MDQL40-127 |
127 |
8*Φ14 |
7*Φ13 |
2 |
11.5 |
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5 inch high air pressure DTH bits |
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MDQL50-135 |
135 |
7*Φ18 |
6*Φ14 |
2 |
15.5 |
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MDQL50-140 |
140 |
7*Φ18 |
7*Φ14 |
2 |
16.0 |
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MDQL50-146 |
146 |
7*Φ18 |
7*Φ14 |
2 |
16.5 |
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MDQL50-152 |
152 |
8*Φ18 |
8*Φ14 |
2 |
17.0 |
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MDQL50-165 |
165 |
8*Φ18 |
8*Φ16 |
2 |
18.0 |
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6 inch high air pressure DTH bits |
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MDQL60-152 |
152 |
8*Φ16 |
7*Φ16 |
2 |
24.0 |
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MDQL60-165 |
165 |
8*Φ18 |
8*Φ16 |
2 |
25.0 |
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MDQL60-171 |
171 |
8*Φ18 |
8*Φ16 |
2 |
27.0 |
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MDQL60-190 |
190 |
9*Φ18 |
9*Φ16 |
3 |
29.0 |
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MDQL60-203 |
203 |
9*Φ18 |
11*Φ16 |
3 |
33.0 |
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8 inch high air pressure DTH bits |
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MDQL80-203 |
203 |
10*Φ18 |
10*Φ16 |
2 |
35.0 |
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MDQL80-216 |
216 |
10*Φ18 |
12*Φ16 |
2 |
49.0 |
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MDQL80-241 |
241 |
12*Φ18 |
18*Φ16 |
2 |
64.0 |
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MDQL80-254 |
254 |
12*Φ18 |
21*Φ16 |
3 |
71.0 |
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MDQL80-305 |
305 |
12*Φ18 |
29*Φ16 |
4 |
95.0 |
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10 inch high air pressure DTH bits |
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MDQL10-254 |
254 |
12*Φ18 |
20*Φ16 |
3 |
108.0 |
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MDQL10-305 |
305 |
12*Φ18 |
36*Φ16 |
4 |
125.0 |
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MDQL10-311 |
311 |
12*Φ18 |
36*Φ16 |
4 |
130.0 |
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MDQL10-318 |
318 |
12*Φ18 |
38*Φ16 |
4 |
142.0 |
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MDQL10-330 |
330 |
16*Φ18 |
42*Φ16 |
4 |
155.0 |
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12 inch high air pressure DTH bits |
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MDQL12-305 |
305 |
12*Φ18 |
36*Φ16 |
4 |
156.0 |
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MDQL12-311 |
311 |
12*Φ18 |
36*Φ16 |
4 |
168.0 |
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MDQL12-330 |
330 |
16*Φ18 |
42*Φ16 |
4 |
180.0 |
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MDQL12-356 |
356 |
16*Φ19 |
48*Φ16 |
4 |
191.0 |
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MDQL12-381 |
381 |
16*Φ19 |
48*Φ18 |
4 |
200.0 |
How to order:
Shank Type + Head Diameter + Face Design + Button Shape
How to choose the buttons:
1. Domed/round buttons
Domes/round buttons are usually used as gauge buttons of DTH bits, suitable for very abrasive and very hard formations.
2. Parabolic 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 button are usually used as front buttons of DTH bits, suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft.
It is used for water wells, ground-hot air-condition well, exploring floor, complex floor and so on.
Wuhan Kingdrilling Diamond CO., LTD, one of the most professional private manufacturer specialized in researching and producing Overburden casing drilling system, DTH hammer, DTH drill bits, Core bits, Thread bits, Taper bits, Shank adapter, Drilling rods, Coal mining picks and related rock drilling tools.
Relying on the university resources and talent advantages in High-tech region, combining with multiple laboratories in universities, we have more power focused on developing the newest products system.
Our DTH drilling tools are produced with advanced technology from Britain. The company is equipped with advanced production facilities including electron-hydraulic forging hammer, multipurpose furnace heat treatment production line, high performance CNC machines, from raw materials prepared, forging, heat treatment, mechanical processing, a completed manufacturing system is finished in the factory. Strict quality control standards make sure stable quality.
Whatever in construction, engineering, piling, water well drilling, tunneling, mining, quarrying or horizontal drilling industry, KINGDRILLING will do the best to satisfy your demands. "Kingdrilling, Keep On Striving", we'll always be in this line to serve our customers the most reliable products and the best support.
1. High quality steels materials.
2. Kingdrilling DTH tools are forged by advanced electron-hydraulic forging hammer.
3.Advanced heat-treatment equipment: multipurpose furnace heat treatment.
4. Completed moulding (tooling ) departments with many molds available.
5.Professional R&D team,completed quality system.
6.Strict Quality-Check Systems.
1.Pre-sale service:
If demand, assist clients to get rich and generous returns on their investments.Select DTH tools model.Design and manufacture down the hole products according to client's requirement.
2.Services during the sale:
Assist clients to draft solving plans.
Pre-check and accept Rock drill products ahead of delivery.
3.After-sale services:
Our sales team will response for your question within 24 hours (Holidays Excluded)
Technical Support will be available in any time.
Free replacement can be provided once the failure confirmed caused by our product quality.
Packed by Carton or Wooden cases.
Delivery:Transprotation: By air, By Express or By sea / By train , according to your requests.
1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.
2. How to check the product are the exact one you want?
A: If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for a better understanding.
3. How to control quality?
A: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.
4. Shipping way.
Sample order: We suggest Courier express like DHL/UPS/FEDEX or by air/by train.
Bulk order: We suggest by air or by sea.
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.
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