... Price 4.30 Kinds Materials API 6A Wellhead X-mas Tree Ring Gasket1.shape: Octagonal, Oval or lens2.type: ... , ASME B16.20 HG20612 HG206337.Material: carbon steel, soft iron, inconel600, M-400, C-276, and so on8. Application ... industry, oil christmas tree, wellhead...9.Hardness and temperaturematerialmax hardness(HB)max temperature(degrees)soft iron 90450carbon steel 120450F51150540304160600316160600 Our ...