... ,316L,310,310S,430,430F 3) ISO9001. stainless steel square bar,hot rolled ,polished,various sizes,strict tolerance,high quality etc ... 43183. production procedure: raw elements(C,Fe,Ni,Mn,Cr,Cu etc.,)--smelted ingots by AOD finery--hot rolled into black ... ,diameter from 1mm*1mm-200mm*200mm6. application:stainless steel square bar is widely used in chemical, shipping,architecture,machine-made, household ...