... ,C60600,C17200,etcAlumimum100,5052,6061,6063,etcAbility for the surface finish: ElectroplateZinc plated(while,colour,dacroment),Nickel plated,copper plated,gold ... coating,electrophoretic coating,etc Polishing Grinding and polishing,etc,except mirror finish Ability for the tolerance Roundess0.002mmCylindricity0.003mmRoughnessRa0.32Straightness0.01/200mm ...