stainless steel square bar,hot rolled ,polished,various sizes,strict tolerance,high quality etc., stainless steel square bar 1.material grade:AISI 201, ... ,Mn,Cr,Cu etc.,)--smelted ingots by AOD finery--hot rolled into black surface--pickling into acid liquid--polished by ... from 1mm*1mm-200mm*200mm6. application:stainless steel square bar is widely used in chemical, shipping,architecture,machine-made, ...