hard chromed shock absorber ,damper piston rod

Hard Chromed Plating Piston Rod for Shock Absorber,widely used in vehicle,hydraulic cylinder,gas spring,etc.
1, Material: According to user requirements (GB45/ S45C/ C45;GB35/S35C/C35;40Cr)
2, Specifications: F8 ~ F40mm
3, Length: 100-600mm
4, Straightness: 0.02x250
5, Roundness: 0.005
6, Cylindricity: 0.01
7, Concentricity: 0.04
8, Surface roughness: 0.05~0.08µm
9, Induction hardness: HRC40~HRC58
10, Case depth: 0.4~1.5
11, Thickness of chromed: According to user requirements (15~25µm)
12, Hardness: 900Hv-1200Hv
13, Cracks: 30 ~ 60/mm
14, Salt spray: 48hrs no. 7~120hrs no. 8
15, Dehydrogenation
hard chromed shock absorber ,damper piston rod