DIN EN 17151:2017
非飲用水地下非壓力輸送和儲存用塑料管道系統 箱子長期抗壓強度測定的試驗方法
Plastics piping systems for non-pressure underground conveyance and storage of non-potable water - Test method for determination of long term compression strength of boxes; German and English version prEN 17151:2017