factory supply directly 25 years experience stainless steel hexagonal bar Grade:201,Y201Cu,203,303,303Cu,304,304L,308,308L ... and the corresponding JIS,DIN,BS standard).Duplex stainless steel such as (2205,2507,2304,F55).precipitation-hardened stainless ... 631),Special stainless steel(904L) Standard:ASTM,JIS,DIN,BS Surface:Hot rolled black,pickled,cold drawn bright,peeled,turned,mill hexagonal bar