Factory wholesale Double Wall Drill Pipe - Symmetric Casing Systems with Slide Blocks – TDS
Factory wholesale Double Wall Drill Pipe - Symmetric Casing Systems with Slide Blocks – TDS Detail:
- Application Range
It is recommended to drill in rock formation where contains some ovals and fractures.
- Design Principles
Make the casing follow easy and the equipment and operation simple
- Outstanding Advantages
1.The stable and reliable working performance and the less vibration of drill rig.
2.Flexible to open and close.
- Operation Procedure
1.when the drilling starts, the blocks slides down through the grooves on pilot bit,and reams to drive the casing shoes and tubes into the hole.
2.When finished the drilling in overburden rock formations, raise the drilling tools and the blocks will get closed through the grooves , and the drilling tools can be pulled out from the hole.
3. Next construction can be followed.
Model | O.D of casing tube(mm) | I.D ofcasing tube(mm) | Wall thickness(mm) | Guide device max Dia.(mm) | Reamed Dia.(mm) | Max O.D of normal bit(mm) | Blocks qty | Hammer type | Weight(kg) |
TDS186 | 219 | 199 | 10 | 197 | 234 | 185 | 3 | COP64/DHD360/SD6/QL60/MISSION60 | 61 |
TDS210 | 245 | 225 | 10 | 222 | 260 | 210 | 3 | JS8/COP84/DHD380/SD8/QL80 | 88 |
TDS240 | 273 | 253 | 10 | 251 | 305 | 240 | 3 | JS8/COP84/DHD380/SD8/QL80 | 96.5 |
TDS280 | 325 | 305 | 10 | 302 | 350 | 282 | 3 | JS8/COP84/DHD380/SD8/QL80 | 115 |
TDS305 | 355 | 325 | 10 | 322 | 380 | 305 | 3 | DHD112/NUMA120 | 214 |
TDS365 | 406 | 382 | 12 | 380 | 432 | 365 | 4 | DHD112/NUMA120 | 254 |
TDS432 | 480 | 454.6 | 12.7 | 450 | 505 | 432 | 4 | TK14/NUMA125 | 415 |
TDS460 | 508 | 482.6 | 12.7 | 479 | 534 | 461 | 4 | NUMA180/TDS18 | 630 |
TDS510 | 560 | 534.6 | 12.7 | 530 | 590 | 510 | 4 | NUMA180/TDS18 | 730 |
TDS553 | 610 | 584.6 | 12.7 | 582 | 639 | 553 | 4 | NUMA180/TDS18 | 895 |
TDS596 | 660 | 628 | 16 | 625 | 690 | 596 | 4 | NUMA180/TDS18 | 946 |
TDS645 | 711 | 679 | 16 | 675 | 741 | 645 | 4 | NUMA180/TDS18 | 1010 |
TDS694 | 762 | 730 | 16 | 726 | 792 | 694 | 4 | TDS24/NUMA240 | 1595 |
TDS744 | 813 | 781 | 16 | 776 | 845 | 744 | 6 | TDS24/NUMA240 | 2436 |
TDS846 | 914 | 882 | 16 | 878 | 946 | 846 | 6 | TDS24/NUMA240/QL300 | 2756 |
TDS948 | 1016 | 964 | 16 | 980 | 1050 | 948 | 6 | TDS24/NUMA240/QL300 | 3076 |
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We believe that long term partnership is a result of high quality, value added service, rich experience and personal contact for Factory wholesale Double Wall Drill Pipe - Symmetric Casing Systems with Slide Blocks – TDS , The product will supply to all over the world, such as: Germany, Armenia, America, To work with an excellent items manufacturer, our company is your best choice. Warmly welcome you and opening up the boundaries of communication. We are the ideal partner of your business development and look forward to your sincere cooperation.

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