In the high-pressure down-the-hole rock drilling project, to achieve the purpose of high-efficiency and rapid rock drilling, it is necessary to choose high-quality and efficient down-the-hole drill bits, that is, to choose different structures of down-the-hole drills according to different drilling methods and rock types drill.

A series of factors such as the end face structure of the bit, the shape of the powder discharge groove, the carbide tooth profile and size, and the hardness of the bit body directly affect the drilling rate, drilling quality, blast hole straightness, bit life and work efficiency. Therefore, it is very important to choose a suitable drill bit in rock drilling engineering.