... stainless steel round bar, angle bar , flat bar , channel bar , hexagon bar , square bar .)1.grade:201,202,301,302,303,304, ... 304L,308,309,310,310S,316,316L,321,410,420,430,etc.2.diameter ... . grade 201,201,301,302,303,304,304l,308,309,310,310S,316,316L,321,410,420,etc. applicationwidely used in ... and hope we can build good & long cooperation stainless steel 304 316 321 angle