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YaHei";">　　2)排氣道應水平安裝，當其直徑或長邊尺寸小于400mm時，間距不應大于4m；大于或等于400mm時，間距不應小于3m；</span></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";"></span></p><p style="text-align: center"><img src="/data/upload/201910/20191016153303_262.png" alt="消防排煙風管" width="285" height="204" border="0" vspace="0" title="消防排煙風管" style="width: 285px; height: 204px;"/></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";"></span><br/></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";">　　2.排煙管道內裝有機械防排煙系統的矩形風管的連接處應采用咬口形式，連接處應保持密封；</span></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";">　　3.排煙管道與風機的連接應采用不燃性材料的法蘭連接或柔性連接；</span></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";">　　4.排煙管道處理的送風和排煙管道單位面積的允許漏風量應符合《通風與空調工程施工質量驗收規范》(GB50243)的規定。供氣管道的允許漏風量應根據工作壓力確定；排煙管道全部符合中壓系統的規定。</span></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";">　　5.排煙管道安裝時，管道穿越隔墻時，管道與隔墻的縫隙應用水泥砂漿等不燃材料填實；</span></p><p style="line-height: 1.75em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei";">　　6.排煙管道廠內排煙管道的保溫層應采用厚度不小于40mm的不燃保溫材料(如礦棉、巖棉、硅酸鋁等)進行保溫。);</span></p></div> <div class="xypg-detail-tags"> <div class="tags-title"> <h3>標簽</h3> <div class="baidu-share">  <div class="bdsharebuttonbox"> <a href="#" class="bds_more" data-cmd="more"></a> <a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a> <a href="#" class="bds_weixin" data-cmd="weixin" title="分享到微信"></a> <a href="#" class="bds_sqq" data-cmd="sqq" title="分享到QQ好友"></a> <a href="#" class="bds_isohu" data-cmd="isohu" title="分享到我的搜狐"></a> <a href="#" class="bds_tqq" data-cmd="tqq" title="分享到騰訊微博"></a> <a href="#" class="bds_fbook" data-cmd="fbook" title="分享到Facebook"></a> </div> 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