316L Stainless Steel Round Bar 1.Standard:AISI,ASTM,GB,JIS 2.Grade:200,300,400 series 3.Diameter:6-360mm Stainless Steel Round Bar 1) Grade : 321 ... , 316L, 317, 317L,310s,904L etc.standard/ASTM/ASME/DIN/JIS and etccertificateISO,SGS,and third part inspection. ASTM 316 /316L Stainless Steel Round Bar