ANSI WELDING NECK FLANGE 1-standards:ASTM,BN API,etc 2- ... , threaded, lap-joint, socket welding and blind2>Manufacturing standards: API, ANSI, BS, JIS, UNI, MSS and SP3>Size range: from 1 ... -inch (DN 15 to DN 1,400mm)4>Pressure: from ANSI class 150 to 2,5005>Materials: A105, LF2, F304, F304L, F316 ...