... - 24" Advantage:15-4000mm Pressure class:150-900lb ASME/A234 WPB/WN-RF flange forged1. DN15-DN2000, 1/2"-78 ... -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 ... abroad, including Germany,New Zealand, Denmark ASME/A234 WPB/WN-RF flange forged DIN