DIN CEN/TS 1401-2 Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(vinyl chloride) (PVC-U) - Part 2: Guidance for assessment of conformity; German version CEN/TS 1401-2:2012

standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2012