... 316L,304H/L,321,310S,347H, ansi b16.5 class 150 weld neck flange1.specificationStandards: ANSI(ASME), AWWA, DIN ... F316/F316L 4 BS3293-1960 STANDARD 26"--48" 150-600LBS SO,WN A105, A350LF2,A182 F304/ ... F304L,F316/F316L 7 AWWA C207 4"--144" Class B,D,E,F T/1 PL A105 ... 15,21,32,33,34,35 NFE29204 BF 42 BF42NBF48 BF48N 13 JIS B2220 STANDARD 10A-1500A ... 4571/DIN174402.picture ansi b16.5 class 150 weld neck flange