... : 304, 304L, 201, 316, 316L etc. 3. Diameter: 3~400mm Stainless Steel Round Bar 1.grade: 201 ,202 ,301,302,303,304 ... you have any requirements of them . standard AISI , ASTAM , JIS , ER , GB , DIN , ISO grade 201,202,301,302,303,304 ... , etc. chemcial composition according to the standard of ASTM , JIS , ER , GB ,etc.