According to the shape of the knife:

1. It can be divided into standard knives with a general diameter of (1-20mm). Tungsten steel 4 edge, 2 edge milling cutter, tungsten steel ball cutter, tungsten steel round nose milling cutter.

2. Non-standard knives with variable diameter, strange shape and various types, such as tungsten steel path flat knives, deep groove knives, etc.

According to the processing particle classification of knife:

Ultra-fine grain tungsten steel milling cutter, ultra-fine grain tungsten steel milling cutter, ultra-fine ultramicrograined tungsten steel milling cutter; The hardness of the milling cutter is different with different particles.