How To Avoid Buying Refurbished Second-hand Rotary Drilling RIGS

In the trading of second-hand rotary drilling RIGS, refurbished equipment often conceals performance hazards and safety risks, which not only increase the later maintenance costs but may also delay the project progress. The following six key dimensions will popularize for everyone how to avoid renovation traps and select reliable second-hand equipment.

1. Verify the identity information of the equipment: First, ask for the factory certificate of conformity, purchase invoice and property rights registration documents of the equipment. Confirm that the machine body number and engine number are consistent with the certificates. If there are traces of number alterations or the certificates are incomplete, it is very likely to be a refurbished machine. At the same time, check the service life and historical usage records of the equipment through the brand's official channels to avoid being misled by false "low-age" information.

2. Inspect the wear of core components: Focus on observing core components such as the engine, hydraulic pump, and drill pipe. Refurbished machines often cover up wear with paint. You can touch the connection points of the components with your hand. If there is obvious unevenness or paint peeling, it may be due to later repair. Check the color of the hydraulic oil. It should be light yellow under normal circumstances. If it is black and accompanied by impurities, it indicates that the equipment has been overloaded for a long time or has not been well maintained.

3. Test the operating status of the equipment: After starting the equipment, observe whether the idle speed is stable, listen for any abnormal sounds from the engine, and when operating the drill arm and the slewing mechanism, check if the actions are smooth and without any jamming. At the same time, the performance of the drilling operation is tested, and the stability of the drilling speed and power output is recorded. Refurbished machines often expose problems such as insufficient power and hydraulic leakage when operating under high load.

4. Check the integrity of the machine body structure: Carefully inspect the machine body frame and the track chassis for any welding marks. For refurbished machines, to cover up collision damage, welding repair is often carried out on the broken parts, and the paint color at the weld points is significantly different from the surrounding area. In addition, check whether the cab glass is an original factory part and whether the sealing rubber strips of the doors and Windows are aged. Non-original factory parts are mostly replaced during renovation.

5. Trace equipment maintenance and repair records: Ask the seller to provide complete maintenance and repair ledgers, and check if there are records of frequent replacement of core components, major engine overhauls, etc. If the ledgers are missing or key maintenance records are ambiguous, be vigilant that the equipment may have major faults. At the same time, contact the previous user of the equipment or the maintenance service provider to verify the authenticity of the maintenance situation.

6. Choose legitimate trading channels: Give priority to purchasing through the brand's official second-hand equipment platform and qualified construction machinery trading markets. These channels usually conduct professional inspections on the equipment and issue assessment reports. Avoid conducting private transactions with individuals. Such transactions not only lack after-sales guarantees but also are prone to encountering faulty equipment such as refurbished or mortgaged machines.

In conclusion, when purchasing a second-hand rotary drilling rig, one should take into account "document verification, component inspection, performance testing, and channel selection". One must not ignore potential risks just because of the pursuit of low prices. Only through multi-dimensional verification and on-site investigation can we avoid the renovation traps to the greatest extent and select equipment with high cost performance and stable application in engineering operations.