Ring joint gaskets are manufactured by solid materials through forging, heat treatment, high-precision processing by CNC lathe according to ASME B16.20 and API 6A standard,also can be produced by drawing and other special request. It is available in R,RX,BX styles, and R type can be manufactured into oval and octagonal cross section, it is primarily used in oil, gas and petrochemical, offshore oilfield industries for valves, flanges, pipework assemblies, high integrity vessel joints and so on. Applicable to a variety of high-temperature ,high pressure,corrosive work conditions.