Changsha Tianhe Drilling Tools and Machinery Co.,Ltd.
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QL60-203mm (8") Button Bit DTH Bit For QL60 Hammer With Alloy Steel For Mine Application
Shanks: QL60
Application: Mining Drilling Hole Blasting
| QL60 series bit specification | |||||||
| Matched hammer diameter(inch) | Bit diameter | Air Holes | Gauge | Front | Weight/KG | Bit shank | |
| mm | inch | (Qty.×Dia.) | (Qty.×Dia.) | ||||
| 6” | 165 | 6 1/2 | 2 | 8*18 | 8*16 | 24.5 | DHD360/SD6/QL60 /Mission60 |
| 171 | 6 3/4 | 2 | 8*18 | 4*18+4*16 | 25 | ||
| 203 | 8 | 2 | 10*18 | 8*18+5*16 | 30 | ||
Bit Face Shape Selection:
1. Flat Face
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.
2. 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 theload and wear on the gauge buttons, but poor hole deviation control.
3. Concave Face
The all-around application bit face specifically for medium hard and homogeneous rock formations.
Features:
We have advanced production equipment & talented researchers & technicians & rich experiences in R & D and production.
We using the best quality raw materials.
We adopting advanced production technology & strict testing procedure.
We passed ISO9001 quality management system certification.
We accept OEM manufacturing and produce on your design.
First class special alloy steel with high strength, heat resistance and wearable
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.