OEM Manufacturer Dth Hole Opener Bits - Concentric casing system with wings – Spark
OEM Manufacturer Dth Hole Opener Bits - Concentric casing system with wings – Spark Detail:
Application
Applicable for land surface covered, with loose material such as soil, clay, weathered rock sand.
Component parts
Operation procedure
Step1: When drilling starts, the system drives the casing shoe and casing tube move down.
Step2: When reaching the bedrock, lift up the block system, the blocks will closed, reverse rotation and pull out the block system from the hole.
Step3: If the hole have reach the desired depth, finish the drilling and continue other process.
Step4: If you still want to drill deeper, use the conventional DTH bit to drill to the desired depth.
Advantages
The locking kit is very reliable, it prevents the wings falling off.
Ralated part list
Specification of concentric casing system with blocks
|
D |
|
h |
H |
C |
G |
|
|
|
|
|
Model |
O.D. of Casing Tube (mm) |
I.D. of Casing Tube (mm) |
Wall thickness (mm) |
Guide device max. Dia. (mm) |
Reamed Dia. (mm) |
Min. I.D. of Casing shoe (mm) |
Qty. of the wings |
Hammer Type |
Weight（KG） |
|
T90 |
114 |
101 |
6.5 |
99 |
125 |
90 |
2 |
COP34/DHD3.5 |
15 |
|
T115 |
146 |
126 |
10 |
124 |
157 |
117 |
2 |
COP44/DHD340/SD4/QLX40 |
20.3 |
|
T136 |
168 |
148 |
10 |
146 |
180 |
136 |
2 |
COP54/DHD350/SD5/QL50 |
33.4 |
|
T142 |
178 |
158 |
10 |
154 |
195 |
142 |
2 |
COP54/DHD350/SD5/QL50 |
38.8 |
|
T160 |
194 |
174 |
10 |
172 |
206 |
160 |
2 |
COP54/DHD350/SD5/QL50 |
46.4 |
Product detail pictures:
Related Product Guide:
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The sales manager has a good English level and skilled professional knowledge, we have a good communication. He is a warm and cheerful man, we have a pleasant cooperation and we became very good friends in private.
By Jonathan from Qatar - 2018.09.08 17:09
