stainless steel flat bar,hot rolled and cold drawn,surface settlements include black,picking, ... 316 321 316 310S 410 420 430 17-4PH ETC.,2.procedure:hot rolled and cold drawnraw materials(nickle,crown,etc ... straight---package by steel strip and plastic3.size:thickness*width 2-10*50-300mm4.surface settlements:black,picking,bright,drawn bench ...