风管法兰及螺栓 [课程编码396]

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通风与空调工程施工质量验收规范 [附条文说明] GB50243-2016mwielngzckuexlemrnuqhediq
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    2 金属风管的连接应符合下列规定：hyblzbbtawkaglfgqcb
        1)风管板材拼接的接缝应错开，不得有十字形拼接缝。

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        2)金属圆形风管法兰及螺栓规格应符合表4．2．3-4的规定，金属矩形风管法兰及螺栓规格应符合表4．2．3-5的规定。微压、低压与中压系统风管法兰的螺栓及铆钉孔的孔距不得大于150mm；高压系统风管不得大于100mm。矩形风管法兰的四角部位应设有螺孔。ffofkluakohyugqdrofpoeenwaueprlyklnjaobkqa
        3)用于中压及以下压力系统风管的薄钢板法兰矩形风管的法兰高度，应大于或等于相同金属法兰风管的法兰高度。薄钢板法兰矩形风管不得用于高压风管。

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表4．2．3-4金属圆形风管法兰及螺栓规格_{lwynghxmrvciyhtc}
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表4．2．3-5 金属矩形风管法兰及螺栓规格acpovgchlbzuzugntynoboihahyosvdfcomgdlqag
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