Verified Company
Zhengzhou Yukun Machinery Equipment Co., Ltd.
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Specification of grantie drill bit
1. Grantie drill bits made with high quality of best quality alloy steel bar and tungsten carbides, through heat treatment.
2. Grantie drill bits can be mainly used in drilling aperture of 50-60mm, pressure of 0.7-1.2Mpa, rock hardness f≥12 hole.
3. Advantage of grantie drill bits—high quality of drilling holes, high drilling speed, exclusive proprietary technology.
4. Grantie drill bits can be used for rock drilling, blasting holes, building highways and other drilling works.
5. Grantie drill bits can be regrind for several times and long life.
Feature of grantie drill bit
(1) Type: grantie drill bit
(2) Diameter: 50-127mm
(3) Bit design: flat, flat retrac, drop center, drop center retrac
(4) Thread diameter: 32, 38, 45, 51mm
(5) Package: in wooden case or in carton
(6) Productivity: 20000pcs/ month
Parameter of grantie drill bit
Material of grantie drill bit
Item | material |
Button bit | Tungsten carbide |
Button rock drill bit alloy head | Yk05 |
Mf rod | 22SiMnCrNiZMo and 22CrNi3Mo |
Bench drill rod | 22SiMnCrNiZMo and 22CrNi3Mo |
Shank adapter | 30CrNi4Mo and 18CrNi3Mo |
Pneumatic picks tools | T10 |
Extension rod | 35SiMnMo |
Small hole drilling tools | 55SiMnMo and 95CrMo |
More details of grantie drill bit
All thread bits are available in various flushing hole configuration. In general, the rule is that:
1. Semi-spherical type bit design are applied to very hard rock
2. Ballistic type to medium hard
3. Conical type to soft rocks.
Bit design | Brief Introduction |
Drop center |
Perfect in abrasive formations where there is accelerated button wear or in medium to hard rock when ballistic buttons have tendency to break.
|
Drop center/retrac |
To be used in medium-hard and fissured rock formations, better hole deviation control.
|
Flat front
|
Ideal for medium hard rock when the rock formation causes heavy gauge wear on the bit. Can also used in very hard and abrasive rock formations.
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Pictures of grantie drill bit
You will enjoy
1. Factory price with high quality.
2. Perfect 7*24hours services.
3. For quality check, a trail order is available.
4. We have professional designer & sample maker team can supply various unique design!
5. Both size & color can do as the customer request, no extra cost.
6. 100% quality assurance, enjoy a good reputation at home and abroad!
7. Priority to become our agent in your city, we offer you our factory prices.