140mm Hm4 Down The Hole High Air Pressure Bits for Drilling Tools

• Certification: ISO 9001:2000, SGS
• Standard: GB
• Surface Treatment: Spray-Paint
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: MDHM4-140
• Manufacturing Process: Forging
• Material: Carbon Steel
• Model: Mdhm4-140
• Bit Dia.: 140mm
• Bit Shank: Hm4
• Color: Green
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year
• Package Size: 32.00cm * 15.00cm * 15.00cm
• Package Gross Weight: 18.000kg

Product Description

140mm HM4 Down The Hole High Air Pressure Bits for Drilling Tools

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.

Rock drill bits Shank type:M3,M4,M5,M6,M8,M1,M12
DTH hammer bits hole diameter: 3'', 4'', 5'', 6'', 8''(85mm-350mm).

In the realm of mining, construction, and geotechnical engineering, the importance of precision drilling cannot be overstated. Among the arsenal of tools used for this purpose, Down The Hole (DTH) drill bits have emerged as a cornerstone technology, revolutionizing drilling operations across various industries. This comprehensive guide delves deep into the world of DTH drill bits, exploring their advantages, features, functions, and applications, shedding light on the pivotal role they play in enhancing productivity and efficiency in drilling endeavors.

Down The Hole drill bits, commonly referred to as DTH bits, represent a specialized class of drilling tools designed to efficiently penetrate hard rock formations. Unlike conventional drilling methods that rely on surface-mounted rigs, DTH drilling involves the deployment of a hammer that strikes the drill bit directly, providing a direct and powerful force for drilling deep into the earth's crust. This method is particularly favored for its ability to maintain a straight drilling trajectory, ensuring accuracy and precision in various drilling applications.

 

 

Technical Date

 

3 Inch Hight Air Pressure DTH bits
Model	Bit Dia.(mm)	NO. X    Button Dia.		NO.Air Holes(PCS)	Weight(KG)
		Gauge	Front
MDHM3-85	85	6*Φ13	4*Φ12	2	4.5
MDHM3-90	90	6*Φ14	4*Φ12	2	4.7
MDHM3-95	95	6*Φ14	4*Φ13	2	4.9
MDHM3-100	100	6*Φ14	5*Φ12	2	5.0
MDHM3-105	105	6*Φ14	5*Φ13	2	5.5
4 inch high air  pressure DTH bits
MDHM4-105	105	6*Φ14	5*Φ13	2	6.0
MDHM4-110	110	7*Φ14	6*Φ13	2	6.2
MDHM4-115	115	7*Φ14	6*Φ13	2	6.6
MDHM4-120	120	8*Φ14	7*Φ13	2	7.0
MDHM4-127	127	8*Φ14	7*Φ13	2	7.4
5 inch high air pressure DTH bits
MDHM5-135	135	7*Φ18	6*Φ14	2	12.5
MDHM5-140	140	7*Φ18	7*Φ14	2	13.5
MDHM5-146	146	7*Φ18	7*Φ14	2	14.0
MDHM5-152	152	8*Φ18	8*Φ14	2	14.4
MDHM5-165	165	8*Φ18	8*Φ16	2	15.0
6 inch high air pressure DTH bits
MDHM6-152	152	8*Φ18	7*Φ16	2	22.0
MDHM6-165	165	8*Φ18	8*Φ16	2	23.0
MDHM6-171	171	8*Φ18	8*Φ16	2	24.0
MDHM6-190	190	9*Φ18	9*Φ16	3	25.0
MDHM6-203	203	9*Φ18	11*Φ16	3	28.0
8 inch high air pressure DTH bits
MDHM8-305	305	12*Φ18	29*Φ16	4	95.0
MDHM8-203	203	10*Φ18	10*Φ16	2	35.0
MDHM8-216	216	10*Φ18	12*Φ16	2	40.0
MDHM8-241	241	12*Φ18	18*Φ16	2	54.0
MDHM8-254	254	12*Φ18	21*Φ16	3	57.0
MDHM8-305	305	12*Φ18	29*Φ16	4	77.0
10 inch high air pressure DTH bits
MDHM10-254	254	12*Φ18	20*Φ16	3	90.0
MDHM10-305	305	12*Φ18	36*Φ16	4	102.0
MDHM10-311	311	12*Φ18	36*Φ16	4	104.0
MDHM10-318	318	12*Φ18	38*Φ16	4	106.0
MDHM10-330	330	14*Φ18	42*Φ16	4	112.0
12 inch high air pressure DTH bits
MDHM12-305	305	12*Φ18	36*Φ16	4	152.0
MDHM12-311	311	12*Φ18	36*Φ16	4	158.0
MDHM12-330	330	16*Φ18	42*Φ16	4	165.0
MDHM12-356	356	16*Φ19	48*Φ16	4	178.0
MDHM12-381	381	16*Φ19	48*Φ18	4	195.0
MDHM125-305	305	12*Φ18	36*Φ16	4	170.0
MDHM125-311	311	12*Φ18	36*Φ16	4	173.0
MDHM125-330	330	16*Φ18	42*Φ16	4	182.0
MDHM125-356	356	16*Φ19	48*Φ16	4	191.0
MDHM125-381	381	16*Φ19	48*Φ18	4	200.0

Kindly Note: We can also design and manufacture the different diameter, holes number, carbide button shape and face shape according to the customers' requirement.

How to order:

Shank Type + Head Diameter + Face Design + Button Shape

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

a. Concave:

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

b. Convex: 

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

c. 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

Geothermal well drilling, Water well drilling, Coal mining drilling, Construction, Quarry, Rock Drilling, Exploration drilling, Oil well drilling.

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. Can I expect a quality products?

A: Yes. mature production technology ensuring the quality satisfy international request.

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. Competitive price:

A: KINGDRILLING factory can supply you the lowest price due to direct sale to customers without distributor.

5. What is the Application?

Mining, Quarrying, Tunneling, Construction, Geological Exploration, Water-well Drilling, Oilfield & Gas Industries.

6. Product feature

Kingdrilling DTH tools are forged by advanced electron-hydraulic forging hammer, and harness process is managed by multipurpose furnace heat treatment.

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