... ,DIN,ASTM,BS,SAE,etc 3.Process:polishing,nickel plating, soft iron core:We can supply a variety of high quality ... message will be answered as soon as possible.Item Name soft iron coreMaterialStainless steel(303,304,316);Free cutting steel (12L14 ... ,CNC auto lathe,Thread rolling machine,drilling,Centreless grinding machine, Manual lathe,Surface grinding machine,etcWe guarantee our products are excellent ...