ObsoleteGo to latest versionGB/T 321-2005

GB/T 321-1980Preferred numbers and preferred number series (English PDF)

优先数和优先数系

GB/T 321 | Evolution and historical versions

Std ID	Title	Status
GB/T 321-2005	Preferred numbers - Series of preferred numbers	Valid
GB/T 321-1980	Preferred numbers and preferred number series	Obsolete

GB/T 321-1980 is obsolete. It has been replaced by GB/T 321-2005. This page sells the obsolete edition, for projects and contracts that still cite it.

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Level / Type

National · Recommended

Scope

GB/T 321-1980 is the English-translated version of 优先数和优先数系.

GB/T 321-1980 is the Chinese national standard "Preferred numbers and preferred number series". It is obsolete: it has been replaced by GB/T 321-2005.

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Document preview — GB/T 321-1980

Document data

1 Document data

Sector: National standard (Recommended).

Status: obsolete, replaced by GB/T 321-2005.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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