kelly bar are especially designed for drill hard materials and when crowd force is required . kelly bar is key components in the execution of boreholes with hydraulic drill rig . kelly bar transfer the torque to the rotary drive and crowd pressure to the drill tools . a kelly bar consist of 2-5 telescopic sections with a system drive keys and lock recesses, welded onto their outer surface. Standard kelly bars are fabricated with a total of 6 drive key on each sections.
Friction Kelly Bar Bauer/Soilmec/Sany/Casagrande Rotary Drilling Rig Kelly Bar High Quality
1. Material: Q345B or 35CrMo
2. Type: Interlocking kelly bar, friction kelly bar, combined interlocking and friction kelly bar, square kelly bar etc customized as per requirement
3. Application: Suit for international CFA rigs as Bauer, Soilmec, Mait, Casagrande etc other brand piling rigs;
4. Customer Feedback: Applied on various drilling rigs and highly praised by domestic and abroad customers
JTHL Kelly Bar:
Frictional kelly bar doesn't need to unlock the joint of its inner and outer lining so that it is convenient and fast to lift the bar. Non-stair key, friction transmission and the outside key are made by highly wear-resisting tempering steel. Friction Kelly Bar is applicable for layer of soft ground and mud, (mud) sand, gravel.
Soilmec, Bauer, Casagrande, Tescar Mechanical Mait friction Kelly bar, Rotary Drilling Kelly Bar
Friction type drill Kelly bar is a kind of drill pipe type with international advanced six-ribs distribution technology composition.
The Kelly bar can generate pressure force when the Kelly bar rotarying can produce peripheral force and the rotary passing down the pressure force can produce the friction force. It is simple operation, drilling depth . it is suitable for soft soil and mud sand .
The complete Kelly bar is with light weight, high strength, high linearity of the single drill pipe.; The inner and outer layer collocate reasonably , with good wear resistance plate.. it is great to meet the special requirement of the drill rig machine.
Specification
| No. | Diammeter of The First | Sections | Sections | Sections | Key Pressure Type | Length of per section(m) | Drill depth | Torque(KN.M) |
| 1 | ¢299 | 3 | Frictional | 9-16 | 24-45 | 100 -120 | ||
| 2 | ¢342 | 3 | 4 | Frictional | 9-16 | 24-45 | 100 -120 | |
| 3 | ¢355 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 56 | 100-120 |
| 4 | ¢368 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 56 | 150-180 |
| 5 | ¢377 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 56 | 150-180 |
| 6 | ¢394 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 58 | 180-200 |
| 7 | ¢406 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 58 | 180-200 |
| 8 | ¢419 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 58 | 200-230 |
| 9 | ¢440 / ¢445 | 3 | 4 | 5 | Frictional | 9-16 | 24 – 58 | 220-260 |
| 10 | ¢470 | 3 | 4 | 5 | Frictional | 9-16 | 24 – 60 | 220-260 |
| 11 | ¢482 | 3 | 4 | 5 | Frictional | 9-16 | 24 - 60 | 220-260 |
| 12 | ¢508 | 3 | 4 | 5 | Frictional | 9-16 | 24 – 68 | 260-360 |
| 13 | ¢530 | 3 | 4 | 5 | Frictional | 9-16 | 32 – 92 | 320-400 |
| 14 | ¢540 | 3 | 4 | 5 | Frictional | 9-16 | 32 - 92 | 320-400 |
| 15 | ¢580 / ¢575 | 3 | 4 | 5 | Frictional | 9-16 | 32 – 92 | 360-420 |
| 16 | ¢630 | 3 | 4 | 5 | Frictional | 9-16 | 32 - 102 | 400-500 |
FAQ
1. Are you Factory?
Ans: Yes,we foucs on manufactuer kelly bars for more than 17years old.Our factory locted in Shandong now,own two factories .
