... .material grade:AISI 201,Y201Cu,202 AISI 303, 304, 304L,310,310S,316,316L,317,321 AISI 410,420,430,430F,431 ... . application:stainless steel square bar is widely used in chemical, shipping,architecture,machine-made, household products industry ,etc., stainless steel square bar 201,202,304,316