建筑给水排水及采暖工程施工质量验收建筑给水排水及采暖工程施工质量验收规 [课程编码792]

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建筑给水排水及采暖工程施工质量验收规范 [附条文说明]GB 50242-2002pejwpxpmsnnolkrsmofqqvzmxrmdqpaehoousbzxmzhwlxdulw

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4．1．3  管径小于或等于100mm的镀锌钢管应采用螺纹连接，套丝扣时破坏的镀锌层表面及外露螺纹部分应做防腐处理；管径大于100mm的镀锌钢管应采用法兰或卡套式专用管件连接，镀锌钢管与法兰的焊接处应二次镀锌。_{opyzepxraaakfpgjperajmoordkazvpooioaaaqjzamop}

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4．1．7  给水立管和装有3个或3个以上配水点的支管始端，均应安装可折卸的连接件。trjzmrsjrlnynkolxipfaaynlxlyjatgkrhpuq

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4．1．8  冷、热水管道同时安装应符合下列规定：_{muihkfgrlwuszguvvgypcocbg}
        1  上、下平行安装时热水管应在冷水管上方。

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        2  垂直平行安装时热水管应在冷水管左侧。trjzmrsjrlnynkolxipfaaynlxlyjatgkrhpuq

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