core drilling bits Drill classification

The drill is used for drilling in solid materials with a through hole or blind hole, and can have a hole for the reaming tool.Core drills bit classification? Material, technology, standards and other classification Material: High-speed steel, cobalt high speed steel, carbide Process: grinding, milling,Drilling Tools Standard: DIN, ANSI, ASME, BSF, BSW, JB, ISO, GB / T, as well as other non-standard Some also divided according to surface treatment: TiN, TiAlN, nitriding, grilled blue.