Mait Hr 180 rotary drill rig interlock & friction kelly bar
Kelly bar is a very important part of hydraulic rotary drilling rig, because its quality directly affects the performance of drilling rig by transmission pressure and work efficiency. Owing to adopt the advanced processing equipment and experienced engineers, strict quality control system, Our Kelly bars successfully matched with Bauer, IMT, Soilmec, Mait, Casagrande, Sany ,Zoomlion and so on for more than 10 years..
Interlocking kelly bar
Interlocking pressure Kelly bar contains 3 or 6 external keys with 3 sets or more concave pressure parts.And the advantage of transfer pressure easily and better anti-torque capacity. It’s suitable for both like dense sand and gravel or weak to strong rock.
| Interlock type 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 |
FRICTION KELLY BAR
The external key of frictional Kelly bar is composed 3 or 6 wear-resistant strips and working through friction force produced by rotary passing down the pressure force without concave pressure point. This type Kelly bar adopts high-strength seamless alloy steel tube and wear-resistant alloy strip. This type is suitable for the soft layer and silt layer with the advantage of operating simple, transferring the maximum torque with minimum pressure loss.
Beijing JieTaiHongLi Technology Development Co.,Ltd specializeed in producing Kelly bar and accessories of drilling rig from 2004 year. We have a professional experienced engineers group with advanced crafts and technology in our R&D department to provide technology support service. Now we have registered 10 Solo patents of our factory, we won sustained good reputation both in domestic and overseas.
We are manufactory and we welcome any trusted dealers to cooperated with us.
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