GB/T 20909-2017
ActiveSteel windows and doors
钢门窗
Application Summary AI generated
GB/T 20909-2017 specifies technical requirements, test methods, inspection rules, and marking for steel windows and doors used in building construction. It applies to residential, commercial, and industrial buildings where steel-framed openings are installed for structural strength, fire resistance, or security purposes. The standard ensures product quality and performance consistency in manufacturing and field acceptance testing.
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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.