How to prevent a kelly bar from breaking during construction?

Preventing a Kelly bar from breaking during construction involves a combination of proper usage, maintenance, and adherence to operational guidelines.
Here are some key steps to help ensure the longevity and proper functioning of a Kelly bar:

Proper Selection and Setup

Operational Best Practices

If the kelly bar broken, how to repair it?

Maintenance and Inspection

Training and Supervision

Environmental Considerations

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