What Are The Precautions for Purchasing A Second-hand Rotary Drilling Rig?

Second-hand rotary drilling RIGS have become a choice for many engineering practitioners due to their price advantage, but the conditions of the equipment vary greatly, so they need to be carefully selected. Mastering key precautions can reduce purchase risks and ensure the efficiency of subsequent operations. The following six points need to be given special attention.

1. Verify the equipment procedures: It is required to provide complete purchase invoices, certificates of conformity and property rights certificates, and confirm that there is no mortgage or dispute. Incomplete procedures may lead to difficulties in subsequent property transfer and even cause legal issues.

2. Evaluate core components: Focus on inspecting the operational status of core components such as the engine and hydraulic pump, and check if there are any major overhaul records. Excessively worn components will increase maintenance costs and affect equipment performance.

3. Check the operating hours: Understand the actual operating hours through the equipment dashboard or maintenance records, and determine the degree of wear and tear in combination with the service life. Equipment with an excessively high number of hours has a greater risk of aging of key components.

4. Inspect the condition of structural components: Carefully observe whether there are cracks, deformations or welding marks on structural components such as drill pipes and masts. Structural damage may affect the load-bearing capacity of equipment and operational safety, and the repair cost is relatively high.

5. Test run to verify performance: Start the equipment for no-load and load test runs to test the smoothness of operation, braking effect and operational sensitivity. Abnormal noise, lag and other issues may suggest hidden faults.

6. Verify maintenance records: Request detailed maintenance files to understand the daily maintenance situation of the equipment. Equipment that is regularly maintained has a more stable mechanical condition and a relatively lower subsequent failure rate.

In conclusion, when purchasing a second-hand rotary drilling rig, it is necessary to take into account the legality of the procedures, the performance and structural condition of the equipment, and reduce risks through comprehensive inspection and trial operation verification. A scientific purchasing method can help practitioners obtain practical equipment at a reasonable cost and provide reliable support for engineering operations.