External Diameter Accuracy: f7,f8
Surface Roughness : max Ra 0.2μm
Hard Chrome Thickness : <Φ22.225mm: min 15 μm
≧Φ24mm: min 20 μm
Surface Hardness : min HV 850
Internal Diameter Accuracy : H7, H8, H9
Internal Roughness : max Ra0.2μm
Roundness: tolerance × 1/2
Special Length : 13 M
Steel Grade : EN 1.0580, E355, JIS STKM13C, DIN ST52, SAE1020 ,other specification can be supplied upon request