PN EN 13476-2:2007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 2: Specifications For Pipes And Fittings With Smooth Internal And External Surface And The System, Type A
出版：Polish Committee for Standardization
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