ONR CEN/TS 13476-4:2013-06
Заменен
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 (CEN/TS 13476-4:2013)
