BS EN 489-2009 区域供暖管道——直埋热水管道网络预保温粘合管道系统——用于供水钢管、聚氨酯保温层以及聚乙烯套管的管接头装配(中文版)
英文名称
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