ICS 91.140.10CCS P 46中华人民共和国国家标准GB/T 44548—2024城市热力管道安全风险评估方法Technical method for safety risk assessment of urban thermal pipeline2024-09-29 发布2025-04-01 实施国家市场监督管理总局国家标准化管理委员会发 布目　　次前言 ······················································...