We could design and supply all kinds of flanges. Dear Sir or Madam Welcome to visit ... , 300, 400, 600, 900, 1500, 2500 ASME/ANSI B16.47(SERIES A & B): WELDING NECK FLANGE, BLIND FLANGE. Pressure Class: 75 ... NECK FLANGE, BLIND FLANGE. Pressure Class: 300, 400, 600, 900 API 6A: WELDING NECK FLANGE, THREAD FLANGE, BLIND FLANGE. Pressure: 2000Psi, 3000Psi ...