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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