... - 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 ... home and abroad, including Germany,New Zealand, Denmark ASME/A234 WPB/WN-RF flange forged DIN