DIN 19531-10
用于建筑物内废物和土壤排放系统的由未增塑聚氯乙烯(PVC-U)插座制成的管道和配件 第10部分:防火性能、质量控制和安装建议
Pipes and fittings made of unplasticized polyvinyl chloride (PVC-U) socket for waste and soil discharge systems inside buildings - Part 10: Fire behaviour, quality control and installation recommendations