PREN 13476-3:2015被替代
Plastics Piping Systems For Non-Pressure Underground Drainage And Sewerage - Structured-Wall Piping Systems Of Unplasticized Poly(Vinyl Chloride) (Pvc-U), Polypropylene (Pp) And Polyethylene (Pe) - Part 3: Specifications For Pipes And Fittings With Smooth Internal And Profiled External Surface And The System, Type B
出版：Comite Europeen de Normalisation
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