... !standard forged flangesstandard pressure rate ANSIANSI B16.5class150,300,600,900,1500,25001/2"-24"slip-on flange(SO ... )long welding neck flange ANSIANSI B16.5class150,300,400,600,900,1500,25001/2"-24" MSSASME B16.47SER,Aclass150 ... ,300,400,600,900 12"-60" APIASME B16.47SER,B class75,150 ... you require.Welcome to your enquiry! non-standard carbon steel pipe flange