Foundation kelly bar for sany rotary drilling rig with length 9~14m
| OEM/ODM | Both |
| Material | Q345B /Q460D / 35CrMo With Special Heat Treatment /27SiMn |
| Manufacture Process | Robot Welding ,Gas Shielded welding , Manual DC Welding |
| Tailored | Round /Square |
Specification
| | OD(MM) | Model | Section | Tube length | Drilling depth | Torque | | ¢299/305 | Friction | 3/4/5 | 9—14 | 24—65 | 110—120 | | ¢340/343 | Friction | 3/4/5 | 9—14 | 24—65 | 110—120 | | ¢355 | Friction | 3/4/5 | 9—14 | 24—65 | 110—120 | | ¢368 | Friction | 3/4/5 | 9—14 | 24—65 | 150—180 | | ¢377 | Friction | 3/4/5 | 9—14 | 24—65 | 150—180 | | ¢394 | Friction | 3/4/5 | 9—15 | 24—70 | 180—200 | | ¢406 | Friction | 3/4/5 | 9—15 | 24—70 | 180—200 | | ¢419/426 | Friction | 3/4/5 | 9—15 | 24—70 | 220—230 | | ¢440/445 | Friction | 3/4/5/6 | 9—18 | 24—85 | 220—260 | | ¢470 | Friction | 3/4/5/6 | 9—18 | 24—102 | 220—260 | | ¢482 | Friction | 3/4/5/6 | 9—18 | 24—102 | 220—260 | | ¢508/510 | Friction | 3/4/5/6 | 9—18 | 24—102 | 260—360 | | ¢530 | Friction | 3/4/5/6 | 9—20 | 32—114 | 320—400 | | ¢558/560 | Friction | 3/4/5/6 | 9—24 | 32—118 | 360—420 | | ¢575/580 | Friction | 3/4/5/6 | 9—24 | 32—118 | 360—420 | | ¢630 | Friction | 3/4/5/6 | 9—26 | 32—150 | 400—500 | |





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