Tubi Cromati Ø 16-500 mm

Chrome plated steel tubes – Technical Properties.   Diameter Tolerance Standard is ISO-f7.   Ovality – max ½ from the OD diameter tolerance. Eccentricity – max +10% of the wall thickness. Surface Roughness – OD is Ra = max 0.20 µm. Surface Hardness – Chrome Layer hardness is minimum 900 HV 0,1. Straightness for OD< 80 [mm] is max 0,3 [mm]/1000 [mm] and for OD> 80 [mm] is max 0,7[mm]/1000[mm]. Chrome Layer