... round bar Size:8mm-150mm Surface:bright or black Length:according to client's request quality:superio420F stainless steel round barSize: 8mm ... stainless steel products.Materials: 303,304,304 L, 310,310 S, 316,316 321,430,430 F, L, 431,410,410 ... S, 416,420,420 F.Standard: AISI, ASTM, GB, JIS, BS, ...