1. Material: GB45/JISS45C or GB35/JIS35C
2. Inner Diameter: 4mm & 5mm & 8mm & 10mm,
Outer Diameter: 12.5mm & 14mm & 16mm & 18mm & 20mm & 50mm
3. Induction Hardening Hardnss: 50-55 HRC.
4. Chrome Plating Thickness: from 15μm into 25μm.
5. Salt Spray Test Time: 120 Hrs Min.
6. Mechanical Property Per GB/T699-1999 Standard.