Stainless steel flange PN16 material:stainless steel standard:ANSI pressure:150#-2500# Stainless steel flange PN16size1/2" - 24" ASME B16.525"- 60" ASME B16. ... , D, EstandardASME B16.5 & ASME B16.47materialCarbon steel (ASTM A105,A350 LF2,etc)Stainless steel (ASTM A182 F304, F304L,F316,F316L,F321 ... A694 A182 F12,F11,F22,F5,F9,F91,etc)Pipeline steel (ASTM A694 F42 F46 F52 F56 F60 F65 F70,etc ...