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Mining Uing 5 Inch 127mm DTH Drill Bits For Down The Hole Hammer DHD350

Changsha Chaojingang machinery manufacturing CO., Ltd

Mining Uing 5 Inch 127mm DTH Drill Bits For Down The Hole Hammer DHD350

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Brand Name : Super Diamond

Model Number : DHD350

Certification : ISO9001:2018

Place of Origin : China

MOQ : 1 piece

Price : Negotiate

Payment Terms : T/T, L/C, Westem Union

Supply Ability : According to order quantity

Delivery Time : About 10-25days

Packaging Details : Carton packaging and wooden box packing

Material : Superior Alloy Steel

Application : Water Well Drilling Or Mining

Advatage : High Performance And Long Service Life

Color : Gold Or You Wanted

Head Shape : Flat Face Bit/Concave Face/Convex Face

Spline Key Number : 8 Splines

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DTH Drill Bits 5”(127mm) For Down The Hole Hammer DHD350, concave face


1. Rapid drilling speed, bit body wearless;

2. Advanced heat treatment process, ensure the drilling life longer than similar products in the market.

3. DHD, MISSION, SD, QL, NUMA,different series of products, it can meet needs of different working conditions.


Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole,mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, Well bore and other fields.


Bit Dia.(mm)

Qty.× Button Dia.(mm)

Qty.Flushing holes













Face shape Features

Concave Face

1. Capable of drilling straighter holes in medium to hard rock which is broken or less consolidated

2. Offers high penetration rate in the above stated rock conditions

3. Has excellent air flushing characteristics

4. Predominant face style for majority of drilling conditions

Flat Face

1. Have a superior performance in hard, abrasive and broken rock conditions

2. They however have a slower penetration rate in comparison to a concave face bit

Convex Face

1. This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc

2. They are recognized for having excellent capability for drilling into moderately consolidated rock conditions

The appearance of the picture is different from that of the actual product, and the actual product is the standard.

Frequently Asked Question:

1.Are you a manufacturer or a trade company?
We are a manufacturer of rock drilling equipments and pneumatic tools in China.
2.How many workers in your factory?and what is your company scale?
We have more than 100 employees, including factory workers,sales people,QC ,R&D and management team.
It occupies 26600 SQM, and workshop has 22000 SQM. With more than 100 staffs, our company includes 26 specialized technicians and 8 senior engineers. And we are equipped with nearly 400 sets of advanced equipment required for manufacturing rock drilling machine and pneumatic tools.
3.Where are your company?
We are located in Changsha city,Hunan province.Only 20 minutes by car from the Huanghua international airport.
4.Why choose CJG DRILL?
  • About 80% employees in our company has more than 10 years Experienced drilling workers in China;
2)High quality compatible with Sandvik, Atlas Copco,Ingersoll Rand etc...
3)Unbeatable price
4)Excellent service.
5.Which port do you shipping from?
We usually ship container from Shanghai port.Guangzhou and Beijing port is available too.
6.Can you accept OEM & ODM ?
Yes, both of them are acceptable.
7.What is your minimum order quantity?
Our MOQ are 1pc or 1 complete set, the price may rely on the order quantity.
8.What is your payment term?
We can accept T/T, L/C at sight, West union and in cash.
9.How about the delivery time?
It all depends,generally it takes about one month both in peak and off season.

10.Could we make a schedule of an appoinment with your company?
Definitely.You are the most welcome.Please inform us your arrival time in any place of China and initial routine in advance.We can reserve the hotel,offer pickup service from Changsha Huanghua airport or the CHR Express station unpon your arrival and after the appoinment.Be our guest then!

Weclome our dearest customers to Visit our factory and to choose our great product ranges!

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Quality Mining Uing 5 Inch 127mm DTH Drill Bits For Down The Hole Hammer DHD350 for sale

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