External Diameter Accuracy : f7 f8
Surface Roughness: max Ra0.2μm
HHard Chrome Thickness : <Φ22.225mm: min 15 μm
≧Φ24mm: min 20 μm
Surface Hardness : min HV 850
Straightness : <Φ20mm: max 0.25/1000mm
≧Φ20mm: max 0.2/1000mm
Roundness : tolerance × 1/2
Standard Length : 3M ~ 6Mup
Standard Size: Φ6 ~ 255Φ (Φ1/4” ~ Φ10”)
Corrosion Resistance(ISO 9227 NSS): Φ<20mm R9 /72hr NSS
Φ≧20mm R9 /120hr NSS
The test of NSS and CASS can be performed in our own laboratory.
Steel Grade: JIS S45C, SAE1045, DIN CK45, EN C45E, ASTM 1045 (special specification & material can be supplied upon request.)