... 2.The Swift Delivery 3.All kinds of metals API 6A Flange Pipe Seal RING JOINT GASKET1.shape: ... ,RX20-215 BX150-303, inch1/2-inch244.certificate:API 6A, ISO9001:2000 , AZ safety5.pressure: PN2.0 ... (CLASS150)-PN42.0(CLASS2500)6.standard: API 6A, ASME B16.20 HG20612 HG206337.Material: carbon steel ... , and so on8. Application: W/N flange, gate valve, oil&gas industry, oil christmas tree, wellhead...9 ...