| 标准编号 | EN 15698-1-2009 |
| 标准名称 | District heating pipes - Preinsulated bonded twin pipe systems for directly buried hot water networks - Part 1: Twin pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene |
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| 发布日期 | 2009-01-21 |
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| 前言 | |
| 无 |
