Stainless Steel Round Bar Surface:Bright,Black Grade:301,304,304L,310S,316,316L,321,410,431,17- ... --6mSpecification:ASTM,AISI,SUS,EN,GB,DIN GradeHot Rolled(Black)Hot Forged(Black)Cold Drawn(Bright)Smooth Turned (Bright)3018mm-200mm150mm-500mm3mm ...