At present, there are three main head design forms of high wind pressure DTH bit: convex type, plane type and concave type. The head design is different when the drill bit size is different. Of course, it also has a certain relationship with rock hardness and drilling requirements. The head alloy is mainly: shot in the side ball, global tooth and shot in the side throw. High wind pressure DTH bit is composed of high wind pressure material, high wind pressure alloy and special heat treatment process. It has the characteristics of long service life, high drilling quality and fast excavation speed
