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China wholesale Dth Bit Dth Hammer - Concentric Casing System With Ring Bit – Spark Featured Image
  • China wholesale Dth Bit Dth Hammer - Concentric Casing System With Ring Bit – Spark

China wholesale Dth Bit Dth Hammer - Concentric Casing System With Ring Bit – Spark

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China wholesale Dth Bit Dth Hammer - 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:

China wholesale Dth Bit Dth Hammer - Concentric Casing System With Ring Bit – Spark detail pictures

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We love an incredibly fantastic standing amid our consumers for our superb item high quality, aggressive rate and also the finest assistance for China wholesale Dth Bit Dth Hammer - Concentric Casing System With Ring Bit – Spark , The product will supply to all over the world, such as: Serbia, Berlin, French, We have established long-term, stable and good business relationships with many manufacturers and wholesalers around the world. Currently, we are looking forward to even greater cooperation with overseas customers based on mutual benefits. Please feel free to contact us for more details.
    • The factory workers have rich industry knowledge and operational experience, we learned a lot in working with them,we are extremely grateful that we can encount a good company has excellent wokers.
    5 Stars By Katherine from Porto - 2017.01.11 17:15
    It is really lucky to meet such a good supplier, this is our most satisfied cooperation, I think we will work again!
    5 Stars By Jason from Austria - 2018.06.21 17:11
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