1,Combined 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 SupplierPackaging Detail: AS REQUESTED
Delivery Detail: 15-20 DAYS
Combined Kelly Bar
| Complex 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 | 150 |
| JT22 406-4x14 | 406 | 4 | 52 | 200 |
| JT25 445-4x15 | 445 | 4 | 56 | 220 |
| 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 |
Combined type Kelly bar is a kind of combination drill, which is formed by mechanical locking type, full interlocking type, frictional type and other various forms. There are variety of combinations. Generally speaking, the Kelly bar may drill the hard layer in the range of 0-50m. It can be used for the construction of the soft layer formation when the hole depth is in the range of 50-70m. According to the need of the configure or the operation condition, the drill pipe chooses the way of transmission of pressure, such as the first section of the fully interlocking Kelly bar according to the machine-locking driving force set, and others insider are full interlocking Kelly bar. In order to achieve a certain depth of drilling, while drilling to enhance the effect of hard layer, it can be closed the full interlocking or mechanical locking Kelly bar outside and grinding resistance Kelly bar most inside. The circumstances of an integrated configuration of the Kelly bar specifications, there are mechanical lockingx1+full interlockkingx3 or mechanical lockingx4+grinding resistancex1, full interlockingx4+grinding resistancex1, and many other kinds.