... forged flangesstandard pressure rate ANSIANSI B16.5class150,300,600,900,1500,25001/2"-24"slip-on flange(SO)welding neck flange ... welding neck flange ANSIANSI B16.5class150,300,400,600,900,1500,25001/2"-24" MSSASME B16.47SER,Aclass150,300,400,600 ... " KS(JIS)KS B1503JIS B2220 5K,10K,16K,20K,30K,10"-1500" ENEN1092-1PN6,PN10,PN16,PN25,PN40,PN63PN10010"-2000"Non-standard ...