DIN CEN/TS 13476-4

Plastics piping systems for non-pressure underground drainage and sewerage - Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) - Part 4: Guidance for the assessment of conformity; German version CEN/TS 13476-4:2008

Deutsches Institut Fur Normung E.V. (German National Standard) , 10/01/2008