DIN EN 13244-7 (1998-07)被替代
Plastics Piping Systems For Buried And Above-ground Pressure Systems For Water For General Purposes, Drainage And Sewerage - Polyethylene (pe) - Part 7: Guidance For The Assessment Of Conformity
出版：German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻
