Flange Material:Carbon Steel Size:1/2 - 24" Advantage:15-4000mm Pressure class:150-900lb ASME/A234 WPB/WN-RF flange forged1. DN15-DN2000, 1/2"-78" 2. SLIP-ON, WELDING NECK, BLIND FLANGE 3. Material: A234 WPB, A234 WPC , A234 GR WP11, A234 GR WP22, A182 GR F22, A182 GR F11, A420 GR WPL6, A234 GR WP5,4. GB12459-90,GB/T13401, ASME/ANSIB16.9, DIN2605,JISB2311a. Flange spigot ductile iron pipe fitting ...