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Product name | 89mm T45 ballistic button bit / Retrac t45 drill bits for mining |
Details |
1, Material : Tugestun Carbide + Top quality Alloy Steel 2, Workmanship : Hot pressed & Cold pressed 3, Advantage : Quality can compare with world's famous brand . |
Application | Tunnel , Blasting , Mining , Quarrying |
Thread type | R25, R28, SSR28, R32, SSR32, R35, SSR35, R38, T38, T45, T51, SST58, SST68, SGT60 |
Face&Skirt type | Face : Flat front & Drop center . Skirt : Normal skirt & Retrac skirt |
Button bit type | Hemispherical & Parabolic & Conical & Ballistic |
Head diameter | 33mm~152mm |
Bit face shape selection:China high air pressure mining button 152mm hard rock dth hammer water well drill bits
1. Drop Center Bit For high penetration rates in soft to medium hard and corrosive rock formations. Low to medium air pressures.Maximum hole deviation control.
2. Concave Face
The all-round application bit face specifically for medium hard and homo generous rock formations. Good hole deviation control and good flushing capacity.
3. Convex Face
For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons, but poor hole deviation control.
4. Double Gauge Face
This kind of face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit.
5. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures.Good penetration rates an resistance to steel wash.