Introduction of DTH Down The Hole Drilling Hammer Bottom Bits
DTH Down The Hole Drilling Hammer Bottom Bits are made from grade hard alloy and special steel, generally matched with the light-duty rock drill, to drill the rock hole within diameter of 50mm.
DTH Down The Hole Drilling Hammer Bottom Bits have two flushing holes and are available in three flavors: Flat, Convex and Concave. These Down The Hole (DTH) bits fit the most popular DTH hammers use in water welling, mining, construction and quarrying, metallurgy mine, geological exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc,.
Mining Drilling Threaded Chisel Rock Drill Bit has different taper degree according to customers' request. And the diameters varies from 20mm to 60mm.According to the total height of taper chisel bits, there are short skirt taper chisel bits and long skirt chisel bits. Usually short skirt means the total height of bits are 50 mm around, while long skirt taper bits are 75mm to 80mm around.
Parameter of Rock Bit Carbon Steel Carbide Threaded Button Bits
| Taper Degree |
Diameter (mm) |
Length (mm) |
| 7°(6° 11° 12°) |
28 |
50-80 |
| 7°(6° 11° 12°) |
30 |
50-80 |
| 7°(6° 11° 12°) |
32 |
50-80 |
| 7°(6° 11° 12°) |
34 |
50-80 |
| 7°(6° 11° 12°) |
35 |
50-80 |
| 7°(4.46° 6° 11° 12°) |
36 |
50-80 |
| 7°(4.46° 6° 11° 12°) |
38 |
50-80 |
| 7°(6° 11° 12°) |
40 |
50-80 |
| 7°(6° 11° 12°) |
41 |
50-80 |
| 7°(6° 11° 12°) |
42 |
50-80 |
| 7°(6° 11° 12°) |
45 |
50-80 |
Images of Rock Bit Carbon Steel Carbide Threaded Button Bits
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