Civil Construction Piling Rig Drilling Tools Interlock Friction Telescopic Kelly Bar
civil construction tools piling rig drilling interlock friction Telescopic kelly bar for sale
Products Feature
1.The design of long guiding structure can improve the verticality of hole formation, improve the stress on the lower pipe orifice, reduce the failure rate of lower pipe cracking, improve the stability of drill pipe compression, increase the width of the retaining ring, and prevent the deformation of the pipe orifice.
2.Interlocking kelly bars are indeed provided with drive ribs which are welded with lock devices in order to transfer the maximum torque to each scope. To make sure to transfer the maximum torque over the full extended length.
3.For springs, we normally use the same disc springs as Bauer’s original kelly bar, which has a high load capacity for all kinds of kelly bar and a service life of over 3000hr. However, considering that what spring is used depends on the pressure, we will also use spiral spring for some friction kelly bar due to the low pressure.
| Technical Specification of Interlocking Kelly Bar | |||||
| Number | Out Diameter (mm) | Interlock | Interlock | Single Length(m) | Drilling Depth(m) |
| 1 | 273 | 3 | * | 9~12 | 24~33 |
| 2 | 299 | 3 | 4 | 9~12 | 24~44 |
| 3 | 325 | 3 | 4 | 9~12 | 24~44 |
| 4 | 355 | 3 | 4 | 9~14 | 24~65 |
| 5 | 368 | 3 | 4 | 9~14 | 24~65 |
| 6 | 377 | 3 | 4 | 9~14 | 24~65 |
| 7 | 394 | 3 | 4 | 9~15 | 24~70 |
| 8 | 406 | 3 | 4 | 9~15 | 24~70 |
| 9 | 419 | 3 | 4 | 9~15.5 | 24~72.5 |
| 10 | 440/445 | 3 | 4 | 9~15.5 | 24~72.5 |
| 11 | 470 | 3 | 4 | 9~16.5 | 24~93 |
| 12 | 508 | 3 | 4 | 9~18 | 24~102 |
| 13 | 530 | * | 4 | 9~19 | 24~108 |
| Remark 1Max Hole Depth = Pitch Number * Single Number - Pitch Number (m) | |||||
| 2Any other drill can be actual site measured, customized produced. Torque is customized according to customer's requirements. | |||||
FAQ
Q: Are you trading company or manufacturer?
A: We are factory.
Q: How long is your delivery time?
A: Usually it is 5~10 days if the goods are in stock. Or it is 45 days if the goods are not in stock, it is according to quantity.
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A: Payment<=100USD, 100% in advance. Payment>=1000USD, 50% T/T in advance balance before shipment. irrevocable LC at sight.
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