DIN EN 1401-1 (2018-04)现行
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; German and English version prEN 1401-1:2018
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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