f7 Induction Hard Chrome Plating Rods

f7 Induction Hard Chrome Plating Rods 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: