... , Blind Flange, Socket Wel Materials:Type: welding neck, slip-on, threaded, lap-joint, socket welding and blindASTM A105A350 LF1, LF2 CL1/CL2, LF3 ... F11, F22,Manufacturing standards: API, ANSI, BS, JIS, UNI, MSS and SPPressure: ANSI class 150 to 2,500Size range: 1/2 ...