... 400 series 3.Diameter:6-360mm Stainless Steel Round Bar 1) Grade : 321, 304, 304L, 316, 316L, 317, 317,310S 2) Processing ... attention all the time.type stainless steel round bar size3 mm to 240mmgrade321, 304, 304L, 316, 316L, 317, 317L,310s,904L ... etc.standard/ASTM/ASME/DIN/JIS and etccertificateISO,SGS,and third part inspection. 316L Stainless Steel Round Bar ...