... ,316L,321 stainless steel angle bar,we can polish surface for you,and have unequal sizes 2 anglesstainless steel ... etc.,)--smelted ingots by AOD finery--hot rolled into black surface--pickling into acid liquid--polished by automatically machine--cutting ... into pieces--checking quality--package4.surface:black,pickling,polish, etc .,5.common sizes we have large ...