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

Brief Introduction of DHD 340-115 DTH Bit

How to Select DTH Bits Face shape and Carbide Button Shape

A:Bits face shape selection

Drop Center

For high penetration rates in soft to medium-hard and fissured rock formations.

Concave Face

The all-round application bit face specifically for medium hard and homogeneous rock formation. Good hole deviation control and good flushing capacity.

Convex Face

For high penetration rates in soft to medium-hard with low to medium air pressure. It is the most resistance to steel wash, and good resistance to steel wash step gauge bit.

Flat Face

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.

B:Insert Carbide Button shape Selection

Different button is ideal for different ground conditions, abrasive levels, PSIs and penetration levels. In general, the more of gauge buttons, the better over performance, especially in hard rock.

Spherical

• Application Strength-multipurpose
• Best suited to soft abrasive
• 25,000 to 45,000 PSI (170 to 300 MPa)
• Abrasive to very abrasive

Ballistic Button

• Application Strength- fast penetration
• Best suited to soft ground
• 10,000to 20,000 PSI(70 to 140 MPa)
• Non abrasive ground

Semi-ballistic

• Application Strength-fast penetration
• Best suited to medium ground
• 15,000 to 25,000 PSI(100 to 170 MPs)
• Mildly abrasive ground

Wedged (Conical) Button

• Application Strength- fast penetration
• Suited for all non-abrasive ground types
• Smaller contact area
• Best suited for smaller diameter bits

 Features of Nickel-alloy steel drill bits:

• High Nickel-alloy steel or Molybdenum-alloy steel for increasing durability and wear characteristics.
• Specific heat treatment standards and strict production process enssure consistent performance.
• Simple structure for easy use and maintenance
• Fast drilling speed, no need grinding.   

    Changsha Changcheng Drilling Tools Co., Ltd., established in 2001. We have our own modern workshop and 16 years technical experiences. With many kinds of CNC machines, precision grinding, heat treatment equipment and quality testing equipments, our company improve the quality and the technical content of products constantly. Besides, we have many senior technicians ,they assure the reliability of the products. High quality alloy steel materials and advanced processing technology ensure smooth operation and longer service life. Factory direct sale promises that you will get lower price in our company. This is the reason why our products are outstanding among all drilling tool manufactures in China. Our products also can perfectly match with the products of the famous brand in the world, such as: Atlas Copco, Sandvik, Ingersoll-Rand and other well-known manufactures.

Our Advantages as belows:

• Top and largest carbide DTH drilling bits manufacturer in Changsha ,Hunan province china.
• Big-scale workshop with Modern and advanced equipment and machines.
• High quality steels materials.
• Advanced heat-treatment equipments.
• Professional sintered-vacumning machines.
• Completed moulding (tooling ) departments with many moulds available.
• Professional R&D team,completed quality system.
• Full stocks for diferent designs.
• Strict Quality-Check Systems.

 Customer List

• High quality: We are the partners with a lot of big factorys in China. We can promise to provide the best quality products to you. 
• Competitive price:Cheap price because of direct factory price. 
• Problems solve ability:This ability comes from rich experiences of drill bits industry and reliable sales..
• Fast delivery time:usually it takes 20 days for production.only 2 or 3 days if we have stock of your request size.
• Best quality control:We have our own experienced QC team,there will be strict inspection and testing for every order before shipping out.
• OEM,ODM service:your own request about product will be served well.
• Best after service:We will go to your place to check and solve the problems if you need.

Packaging

 Using ply-wooden cases and pallet for package to protect the products and avoid the damage during transportation. Also we can customize package according to your special requests.

Delivery

    Delivery Time: shipped in 20 days after payment.

• Steel seal

According to your requirements, we can seal any words on the body of DTH bit.

•  Button Number

We can add the button No. to design non-standard products as your demands.

Amber Zeng

Whatsapp/wechat: +8615700744556

Email: propowerdrills@ aliyun.com