Chrome Plated Bar/Hydraulic Cylinder Piston Rod/Piston Shaft

Steel Grade:CK45/S45/SAE1045,SCM440/SAE4140,EN8D,ST52,16Mn,20Mn,E355,AISI431,SUS304/316

Type:normal;hollow bar,induction hardened

Metric OD Size: 6 mm 1000 mm     Inch OD Size: OD 1/4" to 50".

Hard Chrome Plate Thickness: 15,20,25,30 Micron (or according to customer's request)

Surface Roughness:Ra < 0.4 Micron

Tolerance: ISO f7,f8,H7,H8

Ovality: half of the OD tolerance

Straightness: <0.2 mm/m

Salt Spray Test: ASTM B117-72hours/96hours,results evaluation refers to ISO4540 Rating 8-10.

Package:anti rust oil on material and packed first by cardboard sleeve then in steel frame box.