We also supply a wide variety of DTH bits in numerous shank sizes and our suppliers can custom make
any type of bit to suit all drilling requirements.
The diameter range of DTH bit covers from 115 mm to 305 mm, and there are a variety of bit shape and shank adapting to the drilling requirements under different working conditions. DTH bit is made of high quality alloy steel through forging, precision machining and special surface strengthening technology after heat treatment to improve the service life. The combination of tungsten carbide insert and bit specially developed to meet the drilling requirements which strengthens the rock-breaking ability of the bit.
Bit Face Selection Guide
| Face | Name | Description |
|---|---|---|
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Concave | Concave Face designed for unconsolidated or broken rock. These face features will help drill straighter holes in medium to hard formations. |
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Convex Face | Convex Face bits are designed for fast penetration rates in softer rock like shale and limestone with low silica content. |
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Flat Face | Flat Face bits are a general purpose bit that will work in all rock conditions but should be used in hard or abrasive conditions such as granite, basalt, and hard limestone. Flat face bits are the best choice for drilling in a high silica environment. Flat face bits produce good penetration rates and better erosion pattern. |
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Drop Centre | For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control. |
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Double Gauge Face | Suitable for fast penetration rates in medium to hard rock formations. This bit face is designed for high air pressures. |
