UNI 10968-1:2005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 1: Specifications For Pipes, Fittings And The System
出版：Italian Standards
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