tapered drill bits consist of mining and tunneling two series, with higher drilling efficiency, longer service life, better powder-discharge, better wear-resistance and impact-resistance, easier bit-back performance etc., widely used in metal mine, quarry, tunneling, hydro-electrical engineering and so on.
The features
1. Raw material: alloy steel and tungsten carbides by heat forging treatment
2. Buttons/tipe & size : 4,5,6,7,8;0711/0710mm
3. Skirt length: 50-55mm, 60-70mm.
4. Angle: 7 /11/12 degree.
5. Package: wooden case or plastic box with 50 pieces or 100 pieces.
6. Design: We can design according to customers' requirement and drawing, including buttons number, button type, and flushing holes.
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6°,7°,11°,12° taper Other taper degrees and bit diameters are available upon request. |
Our tapered bits include both cross and button designs.
11°, 12° Taper button bit with hot zinc-coating
1.Pre-sale service:
Act as a good adviser and assistant of clients enable them to get rich and generous returns on their investments . 1.Select equipment model. 2.Design and manufacture products according to client's special requirement ; 3.Train technical personnel for clients .
1.Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .
Provide considerate services to minimize clients' worries.
1.Complete After-sales service,professional engineers available to service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3.Other essential technological service.