The standards of forged flanges mainly include the following: International standards: International Standards Organization ISO issued forged flanges related standards are ISO 7005-1 (metal flanges and socket flanges Part 1: steel flanges), ISO 7005-2 (metal flanges and socket flanges part 2: Cast iron flanges), ISO 6162 (hydraulic corrugated pipe forged flanges and finished flanges), etc. American standards: Standards issued by the American National Standards Association ANSI/ASME, involving forged flanges are ANSI/ASME B16.5 (steel pipeline flanges and fittings), ANSI/ASME B16.9 (steel fittings: Short pipe connection between welded pipe and pipe flange), ANSI/ASME B16.47 (large diameter steel flange: Series A, Series B flanges between NPS 26 and NPS 60), etc. European standards: The forged flange standards issued by the European Committee for Standardization EN are EN 1092-1 (flanges and steel fittings: standardized seamless steel flanges), EN 1514-1 (metal flange materials) and so on. China standard: China Standardization Committee issued forging flange standards GB/T 9112 (steel flange connection), GB/T 9123 (cast iron flange connection) and so on. These standards regulate the size, material, installation requirements, test methods and other contents of the forged flange, which is of great significance to ensure the quality and interchangeability of the forged flange. When selecting and using forged flanges, the selection and design should be carried out according to the actual needs with reference to the corresponding standards.
