68-200mm China manufacturing DHD series Low air pressure DTH drill bits for rock drilling

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Product Description


 Kaishan brand CIR65/CIR70/CIR80/CIR80X/CIR90/CIR110/CIR130/CIR150/CIR170 dive bit is made of alloy steel and advanced heat treated high quality alloy steel, which ensures good drilling performance and long service life. It  is widely used by customers all over the world.


We can design and manufacture according to customers' requirement of the bit diameter,the NO. of air holes,carbide buttons and the face shape.


1.Bit  Face shape selection



2.The detailed parameter of CIR Series Low Air pressure DTH Bit





The picture of CIR Series Low Air pressure DTH Bit





Operation Scene:



Packaging & Shipping

 1.Packing:Plastic or wooden case

 2.Shipping: By sea / By air / By car / By train


Production Flow
Complete production process bring the top production quality.
Company Information

 We are located in Zhengzhou City, Henan Province, the Central area of China with convenient transportation access.All of our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.We now have over 100 employees, an annual sales figure that exceeds USD 10 million and are currently exporting 45% of our production worldwide.





 Q: What's your delivery time?

A: Commonly produce need 20-25 days to produce. Within 3or 5 days if in stock.

Q: What methods of payment are accepted?
A: We agree T/T, L/C, West Union.

Q: What about the shipment?
A: Based on order quantity. 
    We can send it to you by Express, by Air, by Sea, and by Train. Or send the goods to your Chinese agent.

Q: How to control the quality?
A: We should be checking & testing everyone button bit before shipment.

Q: Do you agree sample order?
A: Yes, we are welcome your sample order to testing our quality.

Q: Can we select the button bit color?
A: Yes, We color the product according to the color you need.

Q: Can we change to our mark on the button bit?
A: Yes, we can casting your company mark on the button bit. (Except sample order).

Q: Do you have after-sale service and warranty service?
A: Any quality or quantity problem once confirmed, we will reply you within 24 hours and give you a solution.

Q: Can i trust your company?
A: Our company has been certificated by Chinese government, and verified by Alibaba Trade Assurance,100% refund of the Trade Assurance Amount. Alibaba can guarantee all of your payment, Just order from us!

Q: After Services:    

    a. Our sales team will response for your question within 24 hours (Holidays Excluded).   

    b. Technical Support will be available in any time.