Application Range(DTH hammer type drilling inside the case) It can be widely used in drilling for grouting holes in projests such as cofferdam, foundation and geothermal well and etc.
Features:
1.Hardening treatment of the parts surface with longer operating life
and excellent anti-wear properties
2.Structure optimization Strengthen the structural
3.Superior performance Smooth with high efficiency
|
Outer dia. A (mm) |
Reamed dia. B (mm) |
Inner dia. C (mm) |
Thread dia. D (mm) |
Drill rod dia. E (mm) |
Drill bit dia. F (mm) |
Thread type G |
|
118 |
125 |
88 |
104.5 |
76 |
83 |
R56 |
|
133 |
140 |
108 |
122 |
76 |
102 |
R56 |
|
146 |
152 |
120 |
134 |
89 |
116 |
R78 |
|
168 |
172 |
133 |
146.5 |
114 |
128 |
R83 |
|
216 |
225 |
178 |
203 |
114 |
165 |
R102 |
