Features:
1) Serves as rock drill in concussion and gyration charge to chisel medium-rigidity or hard rock;
2) Tooth of coal-incising machine to sever hard nip-stone;
3) Processing of oil-well drill bit and hard stone material;
4) Plucking of steel stick and steel pipe with high compression ratio;
5) It is applied to manufacture machining knives, cutting blades, and electric drills etc.