ICS07.040CCSA7712天津市地方标准DB12/T1417—2025地下管线三维建模及管理系统技术要求Technicalrequirementsforthree-dimensionalmodelingandmanagementsystemofundergroundpipeline2025-02-12发布2025-03-15实施天津市市场监督管理委员会发布www.bzfxw.comDB12/T1417—2025I目次前言.................................................................................II1范围................................................
