Hunan New Diamond Construction Machinery Co., Ltd.
Hunan New Diamond Construction Machinery Co., Ltd.

Hunan New Diamond Construction Machinery Co., Ltd.

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Hard Rock Drill Bits

Hard Rock Drill Bits

  • Hard Rock Drill Bits
Hard Rock Drill Bits
Product Details:
Place of Origin: Hunan, China (Mainland)
Brand Name: New Diamond
Certification: ISO9001:2008
Model Number: ND55
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: Carton packaging and wooden box packing
Delivery Time: 5-8 work days
Payment Terms: L/C, T/T, Western Union
Supply Ability: According to order quantity
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Detailed Product Description
Name: Dth Hammer Bits Processing Type: Forging
Use: Ore Mining Color: Required
Usage: Quarrying& Ore Mining& Well Drilling Delivery Time: 3-5 Days For Sample
High Light:

hard rock drill bits


ballistic button bits


ND55 Hard Rock Drill Bits

Alloy Steel ND55 DTH Drill Bits




DTH bit is our company main product. After mang years search, we have rich experience in development and manufacture which adopted high-quality raw materials, advanced craft technology and passed through strictly inspection, manufacturing high quality products.

All our products are widely used in mining, water well drilling,tunneling, quarrying, construction, and civil engineering project.


1, Button Shape: Spherical,Semi-ballistic,Ballistic.
2, Mainly used for Quarrying,Ore Mining,Coal Mining, soft, medium hard, and hard rock,blast hole drilling and water well drilling project,Marble quarry or well drilling and other construction projects,etc.
3, Our cemented carbide buttons have very good wear-resistant, can be ground t·ime after time and have a longer service life. Using the specially processed formula, our carbide buttons can meet requirements of various rocks.
4, Buttons are strong in the mining process, and the service lifetime is very long.A lot of grades can be chosen according to different applications.
5, Exactly suggestion for the button used for soft, medium-hard, and hard rocks.
6, Durable performance, wear resistant and withstanding large impacting force.
7, Very good prices according to market situation.
9, Very fast delivery time.
9, The best and reliable after-service.




It is mainly used in geological exploration, coal mine, water conservancy and hydropower, highway, railway, bridge, construction and so on.



THE Drill Head Diameter(mm) Spline Key Number NO.Air Holes Gauge Buttons Front Buttons Weight(KG)
133 - 2 7XØ16 7XØ14 15.0
140 - 2 7XØ18 7XØ14 16.0
146 - 2 8XØ18 7XØ14 17.0
152 - 2 8XØ18 8XØ14 17.5
165 - 2 8XØ18 8XØ16 18.5
WE can design and manufacture according to customers requirement of the bit diameter,the NO.of air holes,carbide buttons and the face shape.
Feature Advantage

1. Long life span: the wear-resist of tungsten carbides is 10-20 times higher compared with other similar materials, which greatly extends the life of the carbide bits;
2. High drilling efficiency: the high grade hardness of the carbides can always stay sharp, which could increase the drilling speeds too;
3. New Diamond's bits are widely used in different rock formations like carbonate rock,limestone,chalk rock, clay rock,siltstone and sandstone;
4. It can greatly reduce the drilling cost, because of its high drilling speed and life span, which reduces the times to changes bits in the drilling service.


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

Hard Rock Drill Bits 0

Contact Details
Hunan New Diamond Construction Machinery Co., Ltd.

Contact Person: Rick.liao

Tel: +8618692219720

Send your inquiry directly to us
Hunan New Diamond Construction Machinery Co., Ltd.
PinJiang Industry Park,PingJiang county,YueYang City,Hunan,China.
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