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"Microsoft YaHei"; font-size: 14px;">矩形風管邊長大于630mm，保溫風管邊長大于800mm，風管長度大于125mm，或低壓風管邊長大于1.2m2，中高壓風管邊長大于不規則橢圓形風管的加固應參照矩形風管。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">除本標準外，不銹鋼風管的加固還應滿足以下要求：</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">當硬聚氯乙烯管的直徑或邊長大于500mm時，管子與法蘭的連接處應設置間距不大于450mm的加強板；有機玻璃鋼和無機玻璃鋼風管應采用相同的主材或防腐性能相同的材料進行加固，并與風管結合。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">在不銹鋼彎管生產中，一般應采用曲率半徑為一個平面邊長的同心圓弧彎管。當使用其他類型的彎頭，且平面邊緣大于500mm時，應設置彎頭導流板。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">眾所周知，在食品生產企業中，食品安全是很重要的。在食品生產過程中，離心風機的主要作用是送風和排風。即生產過程中產生的氣體被快速排出，或熱空氣被輸送到生產線，食物被快速干燥或冷卻。但是無論是排風還是送風都會面臨一個問題，就是輸送的氣體有一些雜質或者腐蝕。而且這些物質會慢慢腐蝕到風扇內部，短時間內可能不會有問題。然而，隨著時間的推移，這些物質可能會滋生細菌，導致生產的食品變質。所以一般的離心風機都會有隱患。</span></p><p style="text-align: center; text-indent: 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