UNE EN 124-6:2015现行
Gully Tops And Manhole Tops For Vehicular And Pedestrian Areas - Part 6: Gully Tops And Manhole Tops Made Of Polypropylene (Pp), Polyethylene (Pe) Or Unplasticized Poly(Vinyl Chloride) (Pvc-U)
出版：Asociacion Espanola de Normalizacion
专家解读视频
