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,.
|
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 |
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