PAS 1004-2004
具有集成弹性接头和负载传递件的预制混凝土节段的井道系统: 标记: econorm井道系. 尺寸规格, 交货技术条件
Manhole system of prefabricated concrete segments with integrated elastomeric joint and load transforming element:mark designation:econorm-Schachtsystem - Dimensions,technical specification for delivery