The applicable range of different types of drill bits is related to factors such as soil conditions and aperture requirements. In the actual construction process, it is necessary to choose the appropriate type of drill bit according to the specific situation. For example, in soft soil formations, short spiral drill bits are the best choice; In hard rock formations, core spiral drill bits or embedded cylinder drill bits are more suitable; In construction projects that require a large number of pile foundations, the reaming spiral drill bit can play its advantages.
In summary, the commonly used types of drill bits in rotary drilling rig construction include short spiral drill bits, core spiral drill bits, hole expanding spiral drill bits, and rock socketed cylinder drill bits. In the actual construction process, the appropriate type of drill bit should be selected based on specific soil conditions, aperture requirements, and other factors to improve construction efficiency and ensure construction quality.