... joint gaskets (metallic gaskets) are widely used in Christmas tree, Gate valve, pipeline fittings, flange, and wellhead assembly. ... gaskets, etc. All our gaskets are manufactured according to API 6A, and ISO 9001:2000, which is interchangeable with those ... IX850, IX900, IX950, IX1000, IX1050, IX1100, IX1150, IX1200. Certificate: API 6A, ISO9001: 2000 Pressure: PN2.0(CLASS150)-PN42.0(CLASS2500) Standard ...