High Quality concentric Casing System drill Bits DHD350 5", symmetric system
A driver bit and a ring are assembled to a complete concentric system bit which is suit for 114-1067mm diameter tube.
Advantage:
1. Enhance penetration and perpendicularity
2. Reduce torque requirements
3. Deal with straight, oblique hole and other angle holes
4. Lowest effect with environment
External dia.(mm): 125/155/188/215/238/276/293/345/375/432...1090
Casing dia.(OD*ID,mm): 114*102/139*127/168*153/194*181...1067*1041
External dia.(mm): 125/155/188/215/238/276/293/345/375/432...1090
Casing dia.(OD*ID,mm): 114*102/139*127/168*153/194*181...1067*1041
Outer Dia Of Casing Tube (mm) | Inner Dia Of Casing Tube(mm) | Reamed Dia(mm) | Min Inner Dia Of Casing Shoe(mm) | Drill Pipes(mm) | Max.Outer Dia of Normal Bit(mm) |
114 | 101-103 | 127 | 91 | 76 | 77 |
127 | 114-116 | 136 | 101 | 76 | 82 |
140 | 124-127 | 152 | 117 | 76 | 92 |
146 | 127-132 | 154 | 117 | 76 | 105 |
168 | 149-155 | 184 | 140 | 76 | 105 |
178 | 159-165 | 194 | 150 | 76.89 | 125 |
193 | 173-180 | 206 | 164 | 76.89 | 140 |
219 | 199-206 | 234 | 184 | 89.114 | 150 |
244 | 224-231 | 260 | 210 | 89.114 | 165 |
273 | 251-257 | 305 | 240 | 114 | 190 |
323 | 301-310 | 348 | 284 | 114.127 | 220 |
406 | 382-388 | 440 | 364 | 127 | 255 |
457 | 433-439 | 488 | 413 | 140 | 340 |
508 | 484-490 | 538 | 464 | 140 | 385 |
558 | 534-540 | 590 | 514 | 140 | 440 |
610 | 586-592 | 642 | 566 | 140 | 485 |
660 | 636-642 | 694 | 615 | 168 | 540 |
711 | 687-693 | 745 | 665 | 168 | 590 |
762 | 738-744 | 798 | 716 | 168 | 640 |
863 | 839-845 | 900 | 815 | 168 | 685 |
Different Shanks(Same as Bits below):
DHD MISSION QL SD
Different Buttons Shapes:
Dome / Round button
Used as gauge buttons of DTH bits, suitable for very abrasive and very hard rock formation.
Parabolic / Semi-ballistic
Used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard rock formations.
Ballistic button
Used front buttons of DTH bits, suitable for medium abrasive and medium hard formations. Also be used as gauge buttons for soft rock.
Production Application:
Professional R&D Team
First-Class Sales Team
Effective Production Team
Perfect After-Sales Service Team
Ply-Wooden Boxes + Pallet
By Air/Sea/Express
Fast and Safe Delivery Team
DTH Hammer
99.8% Response Rate
DTH Pipes
97.9% Response Rate
DTH Hole Opener
96.8% Response Rate
Q1: Can I have a sample for testing?
A:Samples are still to be paid but discounted price can be provided.
Q2: Do you have the inspection procedures?
A:100% strict inspection and testing for every order before packing.
Q3: How can i get the after sale services?
A:Free replacement will provide once the problems casued by our product quality.
Q4: Can I have a visit to your factory before the order?
A: Sure, welcome, here is our address: Yantai, Shandong.
CONTACT:
- Step 1Find your interested products by search keywords
- Step 2Contact the supplier by clicking ”Enquire” or “request meeting” button, otherwise, you also could consult our import consultant.
- Step 3After verifying your email, get response from suppliers or our trade manager will contact you as soon as possible
- Step 4Set up meeting with the Chinese supplier without language barrier