Drill bit for forming borehole in e.g. reinforced concrete structure, has cutting edge provided with two tungsten carbide tips such that tungsten carbide tips have body sections which are made from non metallic materials such as ceramics

摘要

The drill bit (4) is provided with a cutting edge provided with two tungsten carbide tips. The tungsten carbide tips have body sections which are made from non metallic materials such as ceramics.