NF P16-352-1:1998
非压力地下排水和排污塑料管道系统.非塑化聚(乙烯、氯乙烯)(PVC-D).第1部分:管道规范,配件和系统
Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(vinyl chloride) (PVC-U) - Part 1 : specifications for pipes, fittings and the system.