DIN EN 1451-1 (2016-03)被替代
Plastics piping systems for soil and waste discharge (low and high temperature) within the building structure - Polypropylene (PP) Part 1: Specifications for pipes, fittings and the system; German and English version prEN 1451-1:2016
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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