... /4"- 30". Kinds Slip on flanges,welding neck flanges,blind flanges,plate flanges,socket welded flanges,threaded flanges,lap joint flanges etc.Pressure Rating Class150,300,600 ... ,20K,-30K; SCH5S,10S,20S,40S,80S,160,SCHXXS.Standard ANSI B16.5,DIN,JIS,UNI,BS4504,EN1092-1Material Stainless SteelGrade 304,304L ...