How To Choose Second-hand Rotary Drilling RIGS And Other Drilling Equipment (such As Impact Drills)?

In the field of foundation construction, the selection of drilling equipment directly affects the project efficiency and cost. Second-hand rotary drilling RIGS and impact drills and other equipment each have their own focuses. It is necessary to make a judgment based on specific needs.

1. Consider geological adaptability: Second-hand rotary drilling RIGS are suitable for various geological conditions such as clay, sand, and pebble layers, and have strong drilling stability. Impact drills are more proficient in hard rock, weathered rock and other hard strata, breaking rocks by impact.

2. In terms of construction efficiency: Rotary drilling RIGS rely on rotary cutting to form holes, which results in a fast hole-forming speed, especially showing obvious advantages in medium-soft strata. Impact drills operate by repeated impact, which is less efficient but more reliable in hard rock.

3. Calculate the cost input: The initial purchase cost of second-hand rotary drilling RIGS is relatively high, but they have high shift efficiency and are more cost-effective for long-term large-scale projects. Impact drill equipment is inexpensive and suitable for short-term small-scale projects or sporadic operations.

4. Check the site requirements: The rotary drilling rig is relatively large in size and requires a large working space and a solid ground. Impact drills are small in size and light in weight, making them more flexible for narrow Spaces or temporary operations.

5. Regarding function and application: Rotary drilling RIGS can be used in conjunction with various drilling tools and are suitable for deep hole operations such as cast-in-place piles and continuous walls. Impact drills are mostly used for shallow holes and small pile foundations, and their functions are relatively single.

6. Nuclear maintenance situation: The second-hand rotary drilling rig has a complex structure, and it is necessary to focus on inspecting the hydraulic system and drill pipe wear. Impact drills have a simple structure and low maintenance costs, but attention should also be paid to the status of the hammer head and the power system.

In conclusion, if the project is large in scale, has complex geological conditions and a tight schedule, a second-hand rotary drilling rig is a better choice. If it is a small-scale project, in hard rock strata or with limited site conditions, equipment such as impact drills are more cost-effective. When making a purchase, it is necessary to combine the actual working conditions and strictly evaluate the performance and wear and tear of the second-hand equipment at the same time.