... cold drawn,surface settlements include black,picking,bright,etc., stainless steel square bar1.material:201 202 301 304 316 321 316 ... 310S 410 420 430 17-4PH etc.,stainless steel square bar2.procedure:hot rolled ,cold drawn and forged ... into pieces---making them straight---package by steel strip and plastic3.size:1mm*1mm-100mm*100mm stainless steel square bar4.surface settlements:black,picking, ...