82mm DHD25 Shank High Air Pressure DTH Hammer Drill Bits for Tunneling

• Certification: ISO 9001:2000, SGS
• Standard: GB
• Surface Treatment: Spray-Paint
• Manufacturing Process: Forging
• Material: Carbon Steel
• Model: Mdhd25-82
• Model NO.: MDHD25-82
• Bit Dia: 82mm
• No. Air Holes: 2PCS
• Weight: 4kg
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year

Product Description

82mm DHD25 Shank High Air Pressure DTH Hammer Drill Bits for Tunneling

Product Description

KINGDRILLING hammer bits are used with Down-the-hole hammers for drilling holes through a wide range of rocks types. In conjunction with DTH hammers, drill hammer bits are designed with a spline drive for rotating the bit in the ground. Drill bits are available in different sizes and different styles so they can drill a wide range of hole sizes. Our variety of Down the Hole (DTH) bits is manufactured using high quality materials to provide you with a fine balance between penetration capability and bit life.

Applications of Down-the-Hole Drill Bits:

1. Mining: DTH drilling is widely used in the mining industry for exploration, production drilling, and blasting operations. Down-the-hole drill bits play a critical role in accessing mineral deposits efficiently and cost-effectively.

2. Construction: In the construction sector, DTH drill bits are used for various applications, including foundation drilling, piling, anchoring, and tunneling. These bits enable contractors to create boreholes of varying sizes and depths in challenging subsurface conditions.

3. Water Well Drilling: DTH drill bits are utilized in water well drilling to access underground aquifers and provide communities with a reliable source of water. The efficiency and precision of DTH drilling help streamline the water well drilling process.

4. Geothermal Drilling: Geothermal energy production relies on drilling deep wells to access heat reservoirs beneath the earth's surface. Down-the-hole drill bits are essential for geothermal drilling operations, enabling the extraction of heat for renewable energy generation.

 

Technical date

 

1-2 inch Middle air pressure DTH bits
Model	Bit Dia. (mm)	NO. X Button Dia.		NO.Air Holes (PCS)	Weight (KG)
		Gauge	Front
MDHD25-76	76	6*Φ13	5*Φ10	2	3.6
MDHD25-82	82	6*Φ14	4*Φ11	2	4.0
MDHD25-90	90	8*Φ12	5*Φ12	2	4.2
3 inch hight air pressure DTH bits
MDDHD32-85	85	6*Φ13	4*Φ12	2	4.2
MDDHD32-90	90	6*Φ14	4*Φ12	2	4.5
MDDHD32-95	95	6*Φ14	4*Φ13	2	4.7
MDDHD32-100	100	6*Φ14	5*Φ12	2	5.0
MDDHD32-105	105	6*Φ14	5*Φ13	2	5.3
MDDHD34-85	85	6*Φ13	4*Φ12	2	4.2
MDDHD34-90	90	6*Φ14	4*Φ12	2	4.5
MDDHD34-95	95	6*Φ14	4*Φ13	2	4.8
MDDHD34-100	100	6*Φ14	5*Φ12	2	5.0
MDDHD34-105	105	6*Φ14	5*Φ13	2	5.5
MDDHD44-105	105	6*Φ14	5*Φ13	2	8.5
MDDHD44-110	110	7*Φ14	6*Φ13	2	8.8
MDDHD44-115	115	7*Φ14	6*Φ13	2	9.0
MDDHD44-120	120	8*Φ14	7*Φ13	2	9.8
MDDHD44-127	127	8*Φ14	7*Φ13	2	11.0
5 inch high air pressure DTH bits
MDDHD54-135	135	7*Φ18	6*Φ14	2	15.0
MDDHD54-140	140	7*Φ18	7*Φ14	2	16.0
MDDHD54-146	146	7*Φ18	7*Φ14	02	17.0
MDDHD54-152	152	8*Φ18	8*Φ14	2	17.5
MDDHD54-165	165	8*Φ18	8*Φ16	2	18.5
6 inch high air pressure DTH bits
MDDHD64-152	152	8*Φ18	7*Φ16	2	22.0
MDDHD64-165	165	8*Φ18	8*Φ16	2	26.0
MDDHD64-171	171	8*Φ18	8*Φ16	2	27.0
MDDHD64-190	190	9*Φ18	9*Φ16	3	28.5
MDDHD64-203	203	9*Φ18	11*Φ16	3	29.5
8 inch high air pressure DTH bits
MDDHD84-203	203	10*Φ18	10*Φ16	2	40.0
MDDHD84-216	216	10*Φ18	12*Φ16	2	49.0
MDDHD84-241	241	12*Φ18	18*Φ16	2	64.0
MDDHD84-254	254	12*Φ18	21*Φ16	3	71.0
MDDHD84-305	305	12*Φ18	29*Φ16	4	95.0
10 inch high air pressure DTH bits
MDDHD10-254	254	12*Φ18	20*Φ16	3	108.0
MDDHD10-305	305	12*Φ18	36*Φ16	4	125.0
MDDHD10-311	311	12*Φ18	36*Φ16	4	130.0
MDDHD10-318	318	12*Φ18	38*Φ16	4	142.0
MDDHD10-330	330	16*Φ18	42*Φ16	4	155.0
12 inch high air pressure DTH bits
MDHD1120-305	305	12*Φ18	36*Φ16	4	152.0
MDHD1120-311	311	12*Φ18	36*Φ16	4	157.0
MDHD1120-330	330	16*Φ18	42*Φ16	4	165.0
MDHD1120-356	356	16*Φ19	48*Φ16	4	178.0
MDHD1120-381	381	16*Φ19	48*Φ18	4	198.0
Big size bits using in Waterwells, Oil, Gas and Construction Drilling.
MDHD275-311	311	15*Φ18	36*Φ16	3	205.0
MDHD275-334	334	18*Φ19	44*Φ18	3	216.0
MDHD275-356	356	18*Φ19	48*Φ18	3	225.0
MDHD275-368	368	20*Φ19	50*Φ18	4	230.0
MDHD275-381	381	20*Φ19	54*Φ19	4	236.0
MDHD330-381	381	20*Φ19	54*Φ18	4	297.0
MDHD330-406	406	20*Φ19	58*Φ18	4	311.0
MDHD330-431	431	20*Φ19	64*Φ18	4	324.0
MDHD330-445	445	24*Φ20	72*Φ18	4	334.0
MDHD330-470	470	24*Φ20	80*Φ18	4	347.0
MDHD475-495	495	24*Φ20	88*Φ18	4	710.0
MDHD475-525	525	24*Φ20	100*Φ18	4	760.0
MDHD475-580	580	24*Φ20	116*Φ18	4	855.0
MDHD475-660	660	28*Φ20	140*Φ19	4	950.0
MDHD475-680	680	28*Φ20	144*Φ19	4	968.0
MDHD525-711	711	28*Φ20	154*Φ19	4	1455.0
MDHD525-762	762	32*Φ20	172*Φ19	4	1539.0
MDHD525-780	780	32*Φ20	180*Φ19	4	1564.0
MDHD525-825	825	36*Φ20	216*Φ19	4	1625.0
MDHD525-998	998	40*Φ20	348*Φ19	4	1980.0

Carbide Button: Spherical, Ballistic, Semi-ballistic.
Bit face: Convex, Flat, Drop Center.
Color: Green, Blue, Grey, as your demand.

How to choose the suitable head face of the DTH drill bit?

1.  Concave:

Suitable for all kinds of formation, especially for deep well drilling, perpendicularity of the hole is wonderful.

1.  Convex: 

Suitable for the formation of moderate hardness stratum, drilling efficiency is good, borehole perpendicularity is moderate.

1.  Flat:        

Suitable for special hard formation stratum, especially for fracture, crack spacing and complex formation drilling effect is very good, has the good perpendicularity of the borehole.

Product Application

Their functionality include various construction activities such as foundation drilling, piling, quarrying, and tunneling.

 

Company Profile

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.

 

Our Advantages

1. High quality: We are the partners with a lot of big factories in China. We can provide the best quality products to you. 
2. Competitive price: Competitive price because of direct factory price. 
3. Fast delivery time: It usually takes 20 days for production.only 3 or 5 days if we have stock of your request size.
4. Best quality control: We have our own experienced QC team,there will be strict inspection and testing for each order before shipping out.
5. Problems solve ability: This ability comes from rich experiences of drill bits industry and reliable sales..
6. OEM,ODM service: Your own request about product will be served well.
7. Best after service: We will go to your place to check and solve the problems if you need.

After Sales Service

1.Pre-sale service:

Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments .
1.Select equipment model;
2.Design and manufacture products according to client's special requirement ;
3.Train technical personnel for clients .

2.Services during the sale:

1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .

3.After-sale services:

Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.

Packaging & Shipping

Packed by Carton or Wooden cases.
Delivery:

1. Goods in stock can be delivered within 5 days.
2. DTH Bits production time is about 15 days.
3. DTH Hammer product time is about 30 days.

Transprotation: By air, By Express or By sea / By train , according to your requests.

FAQ

1. How to order the products?
A: Please send the inquiry with detail item description or with Model number.
 
2. How about the common packing?
A: If there is no special packing demand, we will take it as our normal packing. First in small carton, and then put in the bigger carton together to make sure goods completed.
 
3. Can I expect a quality products?
A: Yes. mature production technology ensuring the quality satisfy international request.
 
4. 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.
 
5. 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.
 
6. Fast delivery time:
A: Usually it takes 25 days for production.only 3 or 5 days if we have stock of your request size.
 
7. Shipping way:
A: Sample order: we suggest Courier express delivery such as DHL/UPS/TNT/FEDEX or by air
Bulk order: by air or by sea we suggest.
 
8. Competitive price:
A:KINGDRILLING factory can supply you the lowest price due to direct sale to customers without distributor!

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