SIZE RANGE: 1/2" to 4" DIMENSIONAL/TOLERANCE STANDARD: ASME,ANSI B16.11 PRESSURE RATING: #2000,#3000,#6000,#9000 Threaded and Socket Weld MATERIALS: ASTM A105,A182Gr.F304/L,F316/L,A350 LF2,A694-F42 to F70