
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 3: Pipes and fittings with non-smooth external surface, Type B
出版:International Organization for Standardization

专家解读视频
KS M ISO 21138-3:2008 - Identical
SS ISO 21138-3 Ed. 1 (2007) - Identical
NEN ISO 21138-3:2008 - Identical