EN 124-6:2015 沟壑和人孔顶部车辆和行人区-第6部分:由丙烯(PP)聚乙烯(PE)或聚氯乙烯(PVC)(PVC-U)复合材料铸成的沟壑和人孔顶
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)