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11.2.5  焊缝的位置应符合下列规定：mytkcalgncbaqtjkvpxh

    1  直管段管径大于或等于DN150时，焊缝间距不应小于150mm；管径小于DN150时，焊缝间距不应小于管道外径；_{yfitbhkxjdmbavxaaufzuphhwmsqteubqlrqt}

    2  管道弯曲部位不应有焊缝；

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    3  管道接口焊缝距支、吊架边缘不应小于100mm；_{yfitbhkxjdmbavxaaufzuphhwmsqteubqlrqt}

    4  焊缝不应紧贴墙壁和楼板，并严禁置于套管内。_{yfitbhkxjdmbavxaaufzuphhwmsqteubqlrqt}

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通风与空调工程施工规范 [附条文说明] GB50738-2011

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DN150以上的管道，焊缝间距不能小于150mm。因为焊接间距过小，第二次焊接时会影响前一次焊接的强度。qfbeoocgwcejgjvfichalztqpndjuzlkibonda
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焊接焊缝间距要求iszguyubscfvbcncpmdozopfshpds

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焊缝间距可以：

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焊接焊缝间距要求

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