Hard chrome plated around bar : 1.. Supply condition Ground and chrome plated 2. Chrome thickness 20 to 30 micron 3. Surface roughness Ra0.2 micron and rt2 micro 4. Tolerances on dia Iso f7 on the diameter 5.Ovality Half of the tolerance iso f7 6. Straightness 0.2mm/m 7. Surface hardness 850-1150hv (vickers 100g) 8.Cohesion No cracks, breaking or detaching after thermic shock(warming up at 300 celsius degrees and cooling in water) 9 .Porosity Test according to iso 1456/1458 and result yaluation according to iso 4540 rating 8-10 10 corrosion resistance Test in natural salt spray according to astm b 117-72hours Results evaluation according to iso 4540 rating 7-10 11. Weldability Good 12. Packing Anti rust oil to be applied on material and each rod to be packed in paper sleeve