... , BX, RX, IX 2. Shape: Octagonal, oval, lens 3. Standard: ASME B16.20 HG20612 HG20633 Product Description 1. Type: R, BX, RX ... 5. Pressure: PN2.0(CLASS150)-PN42.0(CLASS2500) 6. Standard: ASME B16.20 HG20612 HG20633 7. Material: Carbon steel, soft iron, inconel600 ... -400, C-276, 10#, ss316, ss304. 8. Application: W/N flange, gate valve, oil&gas industry, oil christmas tree, wellhead assembly ...