... steel round barSize: 8mm-150mmSurface: bright or blackLength: 4000mm-6000mmStandard: AISI, ASTM, GB, JIS, BS, DIN,My company mainly produces stainless steel round bars, hexagon bars ... , square bars, flat steel, angle steel and other stainless steel products.Materials: 303,304,304 L, 310,310 ...