| 标准编号 | EN 489-2009 |
| 标准名称 | District heating pipes - Preinsulated bonded pipe systems for directly buried hot water networks - Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene |
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| 标准状态 | |
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| 批准文号 | |
| 发布日期 | 2009-03-11 |
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| 替换信息 | |
| 前言 | |
| 无 |
