Product Name: Blind flange Nominal Diameter: 1/2-24" Pressure Rating: 150-2500lbs Material: F316/F304/F316L/F304L/A105 /F5/F11/F22 15CrMo,12CrMoV,Q235,16Mn,20#, etc Standards :ANSI B16.5/ASME B16.47 Other standards: DIN/BS/JIS etc.