... /Alloy Steel 4:150#--2500# 5:DIN/JIS/ASME/ANSI B16.47 SO Flange TypeSO Flange. Blind Spectacle ... 800 Cu-Ni 90/10,70/30Forged Steel Flanges:* ASME/ANSI B16.5 : WELDING NECK FLANGE, SLIP-ON ... 150, 300, 400 , 600 , 900, 1500 , 2500* ASME/ANSI B16.47(SERIES A & B) : WELDING NECK FLANGE, BLIND ... Class : 75, 150, 300, 400 , 600 , 900* ASME/ANSI B16.36 : (ORIFICE FLANGES) WELDING NECK FLANGE, SLIPON FLANGE ...