现行 SY/T 4078-2023
钢质管道内防腐补口技术规范 钢质管道内防腐补口技术规范
发布日期:2023-10-11
实施日期:2024-04-11
分类信息
研制信息

归口单位: 国家能源局

标准简介
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管道口技防腐钢质

最后更新时间 2025-09-02