... 321,321H, 316, 316L, 317 and so Stainless round bar:Standard: EN, AISI, JIS, ASTM, DIN, GBGrade: ... , 310S, 347HSize: Round bar diameter from 3mm to 400mm.Length: 2m-13mmSurface: Bright, Polished, Turn smooth, Brush, Mill, PickledApplication ... : Stainless round bar, greatly provide for petroleum chemical, metallurgy, ...