Hollow Bar

Hollow Chromed Bar

Hollow Piston Rod

 

Grade: CK45/S45/SAE1045,SCM440/SAE4140,EN8D,ST 52,16Mn,20Mn,E355,SAE1020

Metric Size: 40 mm to 1000 mm     Inch Size:1" to 20"
Chrome Thickness:20 to 30 Micron(or according to customer's request)

Surface Roughness:Ra< 0.4 Micron

Straightness: < 0.2 mm/m

Tolerance: ISO f7,f8,H7,H8