305mm SD12 Shank High Air Pressure DTH Hammer Drill Bits for Underground

• Certification: ISO 9001:2000
• 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.: MDSD12-305
• Manufacturing Process: Forging
• Material: Carbon Steel
• Model: Mdsd12-305
• Bit Dia: 305mm
• No. Air Holes: 4PCS
• Weight: 156kg
• Transport Package: Wooden Case
• Trademark: MING
• Origin: China
• HS Code: 8207199000
• Production Capacity: 20000PCS/Year
• Package Size: 65.00cm * 31.00cm * 31.00cm
• Package Gross Weight: 150.000kg

Product Description

305mm SD12 Shank High Air Pressure DTH Hammer Drill Bits for Underground

Product Description

KINGDRILLING rock drilling tools manufacturer produces a various range of DTH hammer bits with DHD shanks type for a wide range of hole sizes, which have been designed to match all conceivable applications for water well industries, mining and construction.

Features of Down The Hole Drill Bits

1. Tungsten Carbide Inserts: DTH drill bits are equipped with high-quality tungsten carbide inserts that provide excellent wear resistance and cutting efficiency. These inserts are strategically positioned on the bit face to ensure effective rock breaking and penetration.

2. Flush-Face Design: Many DTH drill bits feature a flush-face design, where the bit face is smooth and flat to promote better contact with the rock surface. This design minimizes energy loss during drilling and enhances the transfer of impact force to the rock.

3. Multiple Nozzles: To ensure efficient flushing of cuttings and cooling of the bit during drilling, DTH drill bits are equipped with multiple water or air nozzles. These strategically placed nozzles help maintain optimal drilling conditions and prolong the lifespan of the bit.

4. High-Quality Steel Body: The body of a DTH drill bit is typically made from high-strength steel to withstand the high impact forces and vibrations experienced during drilling. This durable construction ensures the longevity and reliability of the bit in demanding drilling conditions.

5. Various Bit Face Configurations: DTH drill bits are available in a variety of face configurations, including convex, flat, and concave designs. Each configuration is suitable for specific rock types and drilling conditions, allowing operators to choose the most appropriate bit for their application.

6. Threaded Connection: DTH drill bits feature a threaded connection that allows for easy attachment and detachment from the drilling equipment. This quick-change system enables operators to switch between different bit sizes and types efficiently, enhancing drilling flexibility on site.

 

Technical Date

Modle	Bit Dia. (mm)	No.X Button Dia.		No.Air Holes(PCS)	Weight(KG)
		Gauge	Front
4 inch high air pressure DTH bits
MDSD4-105	105	6*Φ14	5*Φ13	2	9.0
MDSD4-110	110	7*Φ14	6*Φ13	2	9.5
MDSD4-115	115	7*Φ14	6*Φ13	2	9.8
MDSD4-120	120	8*Φ14	7*Φ13	2	11.5
MDSD4-127	127	8*Φ14	7*Φ13	2	12.3
5 inch high air pressure DTH bits
MDSD5-135	135	7*Φ16	6*Φ14	2	15.5
MDSD5-140	140	7*Φ18	7*Φ14	2	16.0
MDSD5-146	146	8*Φ18	7*Φ14	2	16.5
MDSD5-152	152	8*Φ18	8*Φ14	2	17.0
MDSD5-165	165	8*Φ18	8*Φ16	2	18.0
6 inch high air pressure DTH bits
MDSD6-152	152	8*Φ18	7*Φ16	2	26.0
MDSD6-165	165	8*Φ18	8*Φ16	2	27.0
MDSD6-171	171	8*Φ18	8*Φ16	2	29.0
MDSD6-190	190	9*Φ18	9*Φ16	3	32.0
MDSD6-203	203	9*Φ18	11*Φ16	3	34.0
8 inch high air pressure DTH bits
MDSD8-203	203	10*Φ18	10*Φ16	2	37.0
MDSD8-216	216	10*Φ18	12*Φ16	2	48.0
MDSD8-241	241	12*Φ18	18*Φ16	2	63.0
MDSD8-254	254	12*Φ18	21*Φ16	3	70.0
MDSD8-305	305	12*Φ18	29*Φ16	4	94.0
10 inch high air pressure DTH bits
MDSD10-254	254	12*Φ18	20*Φ16	3	108.0
MDSD10-305	305	12*Φ18	36*Φ16	4	125.0
MDSD10-311	311	12*Φ18	36*Φ16	4	130.0
MDSD10-318	318	12*Φ18	38*Φ16	4	142.0
MDSD10-330	330	16*Φ18	42*Φ16	4	155.0
12 inch high air pressure DTH bits
MDSD12-305	305	12*Φ18	36*Φ16	4	156.0
MDSD12-311	311	12*Φ18	36*Φ16	4	168.0
MDSD12-330	330	16*Φ18	42*Φ16	4	180.0
MDSD12-356	356	16*Φ19	48*Φ16	4	191.0
MDSD12-381	381	16*Φ19	48*Φ18	4	200.0

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

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 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 ourwebsite for a better understanding.

4. How to make sure the quality?

A: More than 40 Years engineer to make sure the quality, 100% inspection.

5. What is the general delivery time?

A: 15 working days for DTH bits.

20-25 working days for DTH hammer

3-5 working days for ex stock items.

6. Methods of Payment

A: T/T (Telegraphic Transfer) or Western Union.

 

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