PREN 489-2007 标准详情
- 标准号:PREN 489-2007
- 中文标题:
- 英文标题: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
- 标准类别:欧盟标准EN
- 发布日期: