2008.07.01Materials include carbide, high speed steel, SUS steel, etc.
Minimum value: φ0.03
Inner diameter precision: 0.5μ to 1μ
Roundness: 0.5μ to 1μ
Hole depth (thickness): 8 to 10 times the inner diameter
Hole processing introduction
http://unitech-net.jp/pages/41/