The "soul Accessory" of Second-hand Rotary Drilling RIGS: Types And Applicable Scenarios of Drill Pipes

Drill pipes, as the core components of second-hand rotary drilling RIGS, directly determine the construction efficiency and operation range. The differences in material and structure result in significant variations in the geological conditions and engineering requirements they are suitable for. Choosing the right drill pipe can maximize the efficiency of second-hand equipment.

1. Friction drill pipe

Torque is transmitted through inter-node friction, with a lightweight structure and flexible disassembly and assembly. It is suitable for soft soil layers such as clay and silt, and has outstanding cost performance in medium and small-sized projects, but it is prone to slipping in hard rock strata.

2. Machine-locked drill pipe

The intersections transmit power through mechanical locking, featuring high torsional strength and the ability to withstand heavy loads. It is suitable for complex geological conditions such as moderately weathered rock layers and gravel layers, and is often used in the deep foundation construction of large Bridges and high-rise buildings.

3. Telescopic drill pipe

It can be multi-stage extended and retracted to adjust the length, reducing the number of connections and disconnections and improving the efficiency of hole formation. It has obvious advantages in scenarios such as municipal pipelines and foundation pit support where the depth of holes needs to be frequently adjusted.

4. Steel spiral drill pipe

The rod body is equipped with spiral blades and has both drilling and slag discharge functions. It is suitable for loose sandy soil and backfill soil layers, and can effectively prevent the collapse of the hole wall, but it is prone to form mud lumps in strata with strong adhesion.

5. Alloy wear-resistant drill pipe

The surface is covered with a wear-resistant alloy layer, featuring excellent corrosion resistance and wear resistance. It has a longer service life in hard strata containing gravel and quartz sand and is suitable for long-term high-intensity operations.

6. Square drill pipe

The cross-section is square, which ensures more stable torque transmission and better guidance. It is mostly used in directional drilling or projects that require precise control of the drilling trajectory, such as underground pipeline crossing construction.

The selection of drill pipes should be comprehensively considered in combination with engineering geology, equipment model and construction requirements. For second-hand rotary drilling RIGS, suitable drill pipes can make up for the performance loss of the equipment and enhance the reliability of operations, which is the key to tapping the potential of the equipment.