HUNAN GOLDEN GLOBE I AND E OED CO.,LTD.
O.E.D main products including: Taper drill tools Thread drill tools Rotary drill tools Blast furnace frill tools DTH drill tools Coal mining tools
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Small Rock Drill Bits Y1-34-722-76 Tapered Chisel Bit for Hole Drilling
Y1-34-722-76 specification:
Advantages:
1.Premium designs and steel and premium tungsten carbide(carbide code No. YK05 supplied by ZCC factory) , Offers industry-leading strength and penetration rates for more productivity.
2.Excellent straightness and hole clean quality ,Get max . drilling performance.
All tapered chisel bit are made with high quality of raw material through special heat treatment, The deliver capacity are very strong and can completely meet customer’s requirements on delivery design.
Tapered Chisel Bit suitable for mining of black metal mines(such as iron mine, manganese etc), nonferrous metal mine(such as gold, silver, copper etc), marble and granite etc. Its drilling depth usually is 15m-18m in case of hardness grade F8-14.
Rock Hardness Classification
| Gabbro | —– | ||||||||
| Gniess | —— | ||||||||
| Granite | —— | ||||||||
| Limestone | —— | ||||||||
| Marble | —— | ||||||||
| Quartzite | —— | ||||||||
| Sandstone | —— | ||||||||
| Slate | —— | ||||||||
| Shale | —— | ||||||||
| Taconite | |||||||||
| Mpa | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | |
| Grade | soft | Medium | Hard to Very | ||||||