... (2)length:2-500mm (3)materials:Cr12 GCr15 Cr12MoV (4)hardness:HRC58-62 Dear Customers,This is Ada,thanks for your ... .Parameter:1.commodity: tube forming rollers , milling mould rollers 2.Hardness: HRC58-62 3.material: Cr12,Cr12MoV,Cr154. Stable running, long ... Heat-treatmentVaccum or salt -bath quenching Fine turningCNC processing Quality testing If you need more information,please feel free to contact ...