GB/T 321-2005
ActivePreferred numbers-Series of preferred numbers
优先数和优先数系
Application Summary AI generated
GB/T 321-2005 defines standardized series of preferred numbers (Renard series) used for selecting numerical values in product specifications, such as dimensions, capacities, or ratings. It is applied across engineering and manufacturing industries to ensure compatibility, reduce variety, and simplify design and procurement processes. The standard is particularly relevant for mechanical, electrical, and industrial product development where consistent numerical scaling is required.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.