... ring, with outer ring, with inner and outer rings, and gasket for heat exchange equipment; Metal Gasket.TYPES OF GASKET: ... with outer ring, with inner and outer rings, and gasket for heat exchange equipment;MATERIALS ADOPTED: Skeleton and ring, A3 OCr13, 1Cr13 ... flange joints of pipelines, valves, pumps, pressure vessels, and heat exchange equipment, etc. of various media; SPECUFICATIONS AVAILABLE: DN10 ...