ISO 21138-1:2020 EN 1d150973
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 1: Material specification and performance criteria for pipes, fittings and systems
现行
发布日期 :
2020-01-20
实施日期 :