We are ready to share our knowledge of marketing worldwide and recommend you suitable products at most aggressive costs. So Profi Tools offer you finest benefit of money and we are ready to produce alongside one another with Down The Hole Hammer Bits, Casing Drilling System, Down Hole Micro Pile Hammer, We have ISO 9001 Certification and qualified this product .over 16 years experiences in manufacturing and designing, so our products featured with best quality and competitive price. Welcome cooperation with us!
Wholesale Dealers of Tungsten Steel Drill 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
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h
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H
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C
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G
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|
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Model
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O.D. of Casing Tube (mm)
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I.D. of Casing Tube (mm)
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Wall thickness (mm)
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Guide device max. Dia. (mm)
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Reamed Dia.
(mm)
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Min. I.D. of Casing shoe (mm)
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Qty. of the wings
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Hammer Type
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Weight(KG)
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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:
With advanced technologies and facilities, strict good quality manage, reasonable rate, superior assistance and close co-operation with shoppers, we have been devoted to supplying the very best price for our consumers for Wholesale Dealers of Tungsten Steel Drill Bits - Concentric casing system with wings – Spark , The product will supply to all over the world, such as: Orlando, Canberra, Madras, Our company has built stable business relationships with many well-known domestic companies as well as oversea customers. With the goal of providing high quality products to customers at low cots, we are committed to improving its capacities in research, development, manufacturing and management. We have honored to receive recognition from our customers. Till now we have passed ISO9001 in 2005 and ISO/TS16949 in 2008. Enterprises of quality of survival, the credibility of development for the purpose, sincerely welcome domestic and foreign businessmen to visit to discuss cooperation.