... 316L,304H/L,321,310S,347H, ansi b16.5 class 150 weld neck flange1.specificationStandards: ANSI(ASME), AWWA, DIN, EN1092 ... Type Material 1 ANSI B16.5 1/2"--24" 150-2500LBS BL,SO,SW,LJ,WN,THDA105, A350LF2, A182 ... 3 ANSI B16.47 A(MSS SP-44) 26"--60" 150--900LBS BL,WN A105, A350LF2, A694,A182 F304/F304L ... ,F316/F316L 4 BS3293-1960 STANDARD 26"--48" 150-600LBS SO,WN A105, A350LF2,A182 F304/F304L,F316 ...