... 316,316L,310,310S,430,430F 3) ISO9001. stainless steel square bar,hot rolled ,polished,various sizes,strict tolerance,high quality ... etc.,stainless steel square bar 1.material grade:AISI 201, ... large stocks,diameter from 1mm*1mm-200mm*200mm6. application:stainless steel square bar is widely used in chemical, shipping,architecture ...