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Gold concave sperical 8 inch DTH drilling tools SD8 drill bit 216 mm

Gold concave sperical 8 inch DTH drilling tools SD8 drill bit 216 mm

Gold concave sperical 8 inch DTH drilling  tools SD8 drill bit 216 mm

Product Details:

Place of Origin: CHANGSHA,HUNAN
Brand Name: TIANHE
Certification: IS09001
Model Number: SD8-216

Payment & Shipping Terms:

Minimum Order Quantity: 1
Price: Negotiation
Packaging Details: dth bits are packed by Woodens outer side, and Cartons inner side.
Delivery Time: Shipped in 25 days after payment
Payment Terms: T/T
Supply Ability: 5000PCS/month
Detailed Product Description
Color: Glod Materail: Alloy Steel And Carbides
Processing Type: Forging Dth Bits Matched Hammer: SD8 Hammer
Button Shape: Spherical, Ballistic, Semi-ballistic Bit Face Shape: Flat, Concave, Convex, Drop Center

Product Name: hammer tools mining drilling dth hammer

DTH hammers are used for blast hole drilling and water well drilling project.

Working with DTH drilling pipe and DTH drill bit, mainly applied in Mining,

Marble quarry or well drilling and other construction projects.

Quality level: 95% similarity to COP/SD/MISSION/QL/BR/DHD etc famous brand
MOQ: No requirement for testing and trial order
Series: COP/ SD/ DHD/ IR/ Mission/ QL/ BR/ CIR etc



Gold concave sperical 8 inch DTH drilling  tools SD8 drill bit 216 mm


Gold concave sperical 8 inch DTH drilling  tools SD8 drill bit 216 mm

Gold concave sperical 8 inch DTH drilling  tools SD8 drill bit 216 mm









General Introduction


Bit Face Shape Selection:


1. Drop Center Bit


For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.


2. Concave Face


The all-around application bit face specifically for medium hard and homogeneous rock formations.


Good hole deviation control and good flushing capacity.


3. Convex Face


For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce theload and wear on the gauge buttons, but poor hole deviation control.


4. Flat Face Bit


This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.




Carbide Button Shape Selection:


1. Semi-Ballistic Buttons


2. Ballistic Button


3. Spherical Button


4. Two-step Button




Our Advantages:


We have advanced production equipment & talented researchers & technicians & rich experiences in R & D and production.
We using the best quality raw materials.
We adopting advanced production technology & strict testing procedure.
We passed ISO9001 quality management system certification.
We accept OEM manufacturing and produce on your design.


Raw Material



first class special alloy steel with high strength, heat resistance and wearable

The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.






1.Steel Carbide
2.12 years experience
3.Can match to the original bit shank
4.Atlas quality











Quality Warranty


Our company response for any quality problem caused by material or machining defect.




Excellent for water well drilling, geothermal hole, hole blasting and etc.




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About us




The Tenth Anniversary Celebration



Exhibition Photos



Our Service


Teamwhole offers the market most comprehensive range of DTH hammers. There are hammer solutions for water well drillers, miners and quarry drillers as well as for contractors in construction, oil and gas. Teamwhole's DTH hammers are available in holes sizes from 3.5 to 48 inches in diameter.

Teamwhole's flexible and stable ODEX system wins great reputation in users. Reliable quality,innovative design and professional service ensure the fulfill of many projects.

We even offer reverse circulating RC hammers for exploration. We are the earliest in China for RC since 2004. Now the RC hammer and bits are delivered to Australia,South Africa,Russia and Mongolia in large scales.

More than 30 experts supports the technology and enhance the development.

Offer the guide service for assembly and problem-analyse service during using.






Contact Details
Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.

Contact Person: Ms.chen

Send your inquiry directly to us (0 / 3000)