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GB 50217-2018 第7.0.6条 Standard for Cable Design of Electric Power Engineering

Fire prevention and flame retardancy电气工程

GB 50217-2018 第7.0.6条

| **** | The fire resistance performance of fire-resistant cables shall comply with the current national standards, and for fire-resistant cables installed in important locations such as hotel evacuation routes, fire elevator shafts, and fire control rooms, their fire resistance duration shall not be less than 90 minutes. |

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