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Chinese Professional Brocas Dth - Concentric Casing System With Ring Bit – Spark Featured Image
  • Chinese Professional Brocas Dth - Concentric Casing System With Ring Bit – Spark

Chinese Professional Brocas Dth - Concentric Casing System With Ring Bit – Spark

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continue on to further improve, to make sure product top quality in line with market and consumer standard requirements. Our firm has a excellent assurance program have already been established for Dhd360 Dth Hammer, Down Hole Hammer, Tungsten Carbide Drill Bits For Concrete, We have four leading products. Our products are best sold not only in the Chinese market, but also welcomed in the international market.
Chinese Professional Brocas Dth - Concentric Casing System With Ring Bit – Spark Detail:

Application

Applied to over burden formation with complex topographic and geological conditions, such as gravel, fissured formation, boulder, landfill of construction etc.

Specification

  D   h H C G    
Specification O. D. of Casing Tube (mm) I.D. of Casing Tube(mm) Wall thickness of casing (mm) Max. O.D. of pilot bit (mm) Ring Bit O.D. (mm) Max. O.D. of Normal Bit (mm) Hammer Type Weight(kg)
TOP hammer type
P76/7-39 76 62 7 57 88 39 R32 3.2
P89/8-58 89 73 8 70 100 58 T38 5.8
P114/9-84 114 94 10 92 126 84 T45 7.5
P127/10-93 127 107 10 105 142 93 T45 10
P140/10-97 140 120 10 116 161 97 T45,T51 15
DTH hammer type
P114/9-84 114 94 10 94 126 84 COP34/COP32/DHD3.5 12
P127/10-93 127 107 10 105 142 93 COP34/COP32/DHD3.5 16
P140/10-97 140 120 10 116 161 97 COP44/DHD340/M40/SD4/QL40 21
P146/10-110 146 126 10 124 165 110 22
P168/12.7-127 168 142.6 12.7 141 188 127 COP54/DHD350/M50/SD5/QL50  27
P178/12.7-131 178 152.6 12.7 150 196 131 32.5
P194/12.7-145 194 168.6 12.7 166 214 145 COP64/DHD360/M60/SD6/QL60 42.5
P219/12.7-170 219 193.6 12.7 191 243 170 58
P245/12.7-195 245 219.6 12.7 214 268 195 DHD380/COP84/SD8/QL80 78
P254/12.7-203 254 228.6 12.7 224 276 203 84.5
P273/12.7-223 273 247.6 12.7 241 305 223 100
P325/12.7-276 325 299.6 12.7 292 350 276 135
P406/12.7-350 406 380.6 12.7 377 442 350 DHD112/QL120/SD12/N120 280
P508/12.7-416 508 482.6 12.7 478 545 416 522
P560/12.7-475 560 534.6 12.7 528 595 475 NUMA180SD18/Numa180/TH18/TS18/TK18 620
P610/12.7-513551 610 584.6 12.7 558 645 513 NUMA180 710

Operation Schematic Figure

Concentric casing - 1
Concentric casing - 2
Concentric casing - 3

Step1: The drilling in over burden formation is finished.

Step2: Reverse rotation of the hammer and pull the pilot bit out from the hole.

Step3: Replace the pilot bit with normal bit to continue drilling down.

Product Details

Concentric casing - 4
Concentric casing - 5

Product detail pictures:

Chinese Professional Brocas Dth - Concentric Casing System With Ring Bit – Spark detail pictures

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Quality initially, Honesty as base, Sincere company and mutual profit is our idea, in order to create repeatedly and pursue the excellence for Chinese Professional Brocas Dth - Concentric Casing System With Ring Bit – Spark , The product will supply to all over the world, such as: Iceland, Vietnam, Zambia, Create Values,Serving Customer! is the aim we pursue. We sincerely hope that all customers will establish long term and mutually beneficial cooperation with us.If you wish to get more details about our company, Please contact with us now!
    • The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
    5 Stars By Laura from Porto - 2018.11.22 12:28
    Sales manager is very enthusiastic and professional, gave us a great concessions and product quality is very good,thank you very much!
    5 Stars By Debby from Accra - 2018.07.27 12:26
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