... : R11-105, RX20-215 BX150-303, inch 1/2''-inch24'' 4. Certificate: API 6A, ISO9001: 2000 5. Pressure: PN2.0(CLASS150 ... , inconel600, M-400, C-276, 10#, ss316, ss304. 8. Application: W/N flange, gate valve, oil&gas industry, oil christmas tree, wellhead assembly ...