201/ j3 j4 j5 Flat Rod 25mm 50mm Diameter Hot Rolled Steering Shaft Baring
J3 material in decorative plate can be simple processing, slightly difficult is not. There is a processing plant teacher said that with J3 material cut plate bending, after broken there is an inner seam (black titanium, color plate series, sanding plate, broken, folded out of the inner seam). The sink material has tried bending, 90 degrees can, but it will not continue.