1.Item:304L stainless steel flange 2.Standard:ASTM,ASME,DIN,BS,DIN 3.Size:1/2''~50'' 4.Type:SO,IF,TH,WN,SW,BL Stainless steel flangeStandardGB/T9112-2000, ANSI B16.5, HG20592-2009, ASTM A105, ASTM A182 Size1/2″~240″(10-6000) W.TSch5S~XXSTypeintegral flange(IF), threaded flange(TH), lap joint flange(LJF),welding neck flange(WN),slip-on flange (SO),socket welding flange(SW),blind flange(BL) ...