... 500mm~64mm, 3, The radial direction beats ≤0.03mm, 4, Transient equilibrium precision ≤5g.mm.It is suitable for all ... consecutively, guarantee the same printing effect from start to finish.4, Technology and material1, Steel tube as base material,2, ... surface, 3, Engraving graphics on the copper layer, 4, Plating chrome layer 5. Production proceduresCustomer→electronic file (or original printing sample) ...