GB/T 221-2000
AbolishedNotations for designations of iron and steel
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Application Summary AI generated
GB/T 221-2000 specifies the rules for forming designations (grades) of iron and steel products, including the use of letters, numbers, and symbols to indicate material composition and properties. It is applied in China’s metallurgical industry for labeling, ordering, and quality documentation of steel and iron products across manufacturing, construction, and engineering sectors. The standard ensures consistent identification in production, trade, and testing contexts, facilitating communication between suppliers and users.
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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.