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| DB33/T 1157-2019 Technical code for operation and maintenance of urban utility tunnel (English Version) |
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Detail of DB33/T 1157-2019
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Introduction of DB33/T 1157-2019
本规范适用于浙江省内用钢筋混凝土结构建造的城市地下综合管廊的运行维护。入廊管线的运行维护应符合相关现行国家标准的规定。
Contents of DB33/T 1157-2019