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GB 50243-2016 第6.2.5条 Code for Acceptance of Construction Quality of Ventilation and Air Conditioning Works

Air duct components暖通空调

GB 50243-2016 第6.2.5条

| **** | Silencers and acoustic elbows shall be fabricated and installed with smooth, undamaged surfaces; the infill material shall be non-combustible, moisture-proof and odour-free, and shall not sag or deform. |

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