2022-06-10 As a kind of equipment often used in construction machinery, long auger has a high utilization rate. The application range of long auger drilling machines is very wide, which can meet the use of bridge construction and high-rise building engineering. At present, rotary drilling machine has been widely used in the engineering construction of drilling and grouting. Due to the widespread use of this equipment, the selection and correct operation of spiral drills and the use of long spiral drills have become a matter of great concern to every user.