| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 1 Year |
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Taper Drilling Rock Crown Button Bit and Drill String Steel Rod for Quarry Borehole in Granite Mining Site
Product Characteristic:
1.Button bit taper angle: 7°,11°,12°
2.Length: 50/55/71/80 mm
3.Diameter: 30-42 mm
4.Button bit shape: spherical/parabolic
5.Socket inside diameter: 15/19/22/25(mm)
6.Material and process: high quality alloy steel bar and tungsten carbides, through heat treatment
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