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Customize any Kelly bar according to your needs. Common Model: MZ(JS)D-nxL
Δ High strength, High abrasion-resistance, High-reliability Prolong service life
| No. | Component | Features | No. | Component | Features |
|---|---|---|---|---|---|
| 1 | Steel tube | Seamless alloy tube; higher nominal loading torque; Shot Blasting before welding. | 5 | Drive shell | Robot cutting and welding; Integral arc plate; High wear resistance. |
| 2 | External strips | Alloy material heat-treated; High hardness and high abrasion-resistance. | 6 | Terminal joint | Robot cutting and welding; Overlapping of internal and external plates. |
| 3 | Locking plate | Alloy material heat-treated; Robot cutting; Tail structure reduces cracking. | 7 | Anti-friction plate | Full-rotating; Reduce wear on pipe ends and stopper plate. |
| 4 | Upper guide ring | Three moving rings; Wear-resistance; Impact resistance. | 8 | Tool joint | Integral forging (min 1.2m); Significantly reduce weld load. |
Bulk export to various parts of the world.




Finished product inventory and raw materials



Certificate: CE & ISO9001 & ISO45001 & ISO14001

We are the largest and most popular Kelly bar manufacturer in China. We have been a major supplier to leading manufacturers such as XCMG, Zoomlion, and Sunward for 20 years. Tens of thousands of units have been delivered to job sites worldwide.
