| Customized: | Non-Customized |
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| Length: | Taper-length |
| Type: | Twist Drill Bit |
| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier Comparing with chisel bits and cross bits, taper button bits have higher technology, much longer primary drilling time and higher drilling efficiency. According to the tungsten carbide insert, button bits can be divided into types of hemispherical, conical and parabolic button, etc.
Made with high quality of raw material through special heat treatment ,especially, tungsten carbide of tapered button bits are from Boart long year,widely applied in Hand Hold ( short-hole) drilling system for dimensional stone quarrying.
Diameter of bits from 30mm to 50mm with 4 ,6,7,11,12 degree, premium alloy tapered drill steel with Hexagonal.22mm and Hexagonal.25mm,The deliver capacity are very strong and can completely meet customer's requirements on delivery design,number of buttons is 4,5,6,7,8,9,7 buttons is very popular for hold held (short holes ) and blast drilling system.
| Description | Diameter (mm) | Length (mm) | Water hole | Weight approx (kgs) |
| Taper degree a=7°,11°,12°. Inner hole diameter d=22mm,24mm |
32mm | 55 | 3 | 0.2 |
| 34mm | 60 | 3 | 0.23 | |
| 36mm | 65 | 3 | 0.3 | |
| 38mm | 73 | 3 | 0.37 | |
| 40mm | 67 | 3 | 0.37 | |
| 42mm | 73 | 3 | 0.4 |
Quzhou Zhongdu Machinery Technology Co., Ltd is industry and trade company which modern enterprise integrating scientific research, development, manufacture and trading. Based on integrity, responsibility and cooperation, our company have professional R&D and sales team, providing one-stop service for customers. Our company mainly products is Jack Hammer, Screw Air Compressor, Water well drilling rig, Piston Air Compressor, Drill Rig Parts, Bearing, and Other Machinery Hardware Product etc.
After many years of production and research and development, we have obtained more than 20 national patents. The products are sold at home and abroad and are well received by customers. Our products sold at home and abroad, after get the self-managemert import and export rights, our products are exported to Vietnam, Indonesia, Philippines, Cambodia, Pakistan, Afghanistan and other countries and regions.
Suppliers with verified business licenses
Audited Supplier 
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