... /2"-48" 4. pressure: CLASS150,300,600,900,1500,2500 JX-7383 ansi welding neck flange1.specificationStandards: ANSI(ASME), AWWA, DIN ... ,40,63,100TYPE01,02,04,05,11,12,13,21,32,33,34 EN10025(S235JRG2),EN10222-2AND3(P245GH ANDP280GH),EN10222-5 ... ,02,03,04,05,11,12,13,14,15,21,32,33,34 ISO2604-1 F8 F9 F13 F18 F22 F49 ... ,02,03,04,05,11,12,13,14,15,21,32,33,34,35 NFE29204 BF 42 BF42NBF48 BF48N 13 JIS ...