1, Interlocking Kelly Bar
2, Matched with IMT, BAUER, SOILMEC, MAIT, CMV, SANY, XCMG
3,Competitive Price
Port: QINGDAO/SHANGHAI
Minimum Order Quantity: 1 Piece/Pieces
Supply Ability: 100 Piece/Pieces per Month
Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Contact Supplier
Packaging Detail: AS REQUESTED
Delivery Detail: 15-20 DAYS
Interlocking Kelly Bar
| Interlocking Kelly Bar | ||||
| Type | O.Dia.(MM) | Section | Depth(m) | Torque(KN.M) |
| JT12 340-3x13 | 340 | 3 | 36 | 120 |
| JT12 356-3x13 | 356 | 3 | 36 | 120 |
| JT15 377-4x14 | 377 | 4 | 52 | 150 |
| JT20 406-4x14 | 406 | 4 | 52 | 200 |
| JT22 406-4x14 | 406 | 4 | 52 | 220 |
| JT25 445-4x15 | 445 | 4 | 56 | 250 |
| JT25 445-3x15 (Reinforced) | 445 | 3 | 42 | 250 |
| JT25 470-4x15 | 470 | 4 | 56 | 250 |
| JT25 508-4x15 | 508 | 4 | 56 | 250 |
| JT28 508-5x15 | 508 | 5 | 70 | 280 |
The external key of the mechanical locking and pressurizing Kelly bar has three or six keys. There are three large groups or N groups pressure concave pats in the external key of the Kelly bar, three keys or six keys wear-resistant bar in the internal key. The length of the bar is less than the length of large concave tine. When the driving force rotates, the internal key of the driving sets or the internal key of the Kelly bar rotate to the external key of the large concave tine and formed a Kai-type pressuring point. Driving force head send pressure to the drill head, it is formed a mechanical locking, drill bit reversal upgrade smoothly before unlocking. The transmission pressure of this drill pipe is better for hard or soft layer to drill, and this form of drill pipe needs driving force head to move up and down when drilling in hard layer. It transfer pressure after find the large concave meshing tine in the external. At present, mechanical locking and pressurizing drill pipe is usually formed by three section, four sections and five sections, which the depth in the range of 36-80m
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