PREN 124-4:2012被替代
Gully Tops And Manhole Tops For Vehicular And Pedestrian Areas - Part 4: Gully Tops And Manhole Tops Made Of Steel Reinforced Concrete
出版：Comite Europeen de Normalisation
专家解读视频
Pertains to gully tops and manhole tops with a clear opening up to and including 1000 mm for installation within areas subjected to pedestrian and/or vehicular traffic.
NF EN 124-4:2013 - Identical
NEN EN 124-4:2015 - Identical
DIN EN 124-4 (2012-11) - Identical
12/30265307 DC - Identical
NEN EN 124-4:2012 - Identical
