dia :8mm~400mm grade :600 series model number :17-4PH lining and pipeline of acidproof vessel and equipment dia :8mm~400mm grade :600 series model number :17-4PH17-4PHstainless steel round bar1> Dia.: 8mm~400mm2>model number : VRM10153> Surface: black, rough turning, smooth turning, bright, centerless grinding4>Standard: ASTM, JIS, SUSFor more information, pls contact us freely.