DIN EN 13598-2 (2016-09)現行
Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) Part 2: Specifications for manholes and inspection chambers
出版：German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻
