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17/30339707 DC
En Vigor
2017-08-23
BS ISO 21138-2. 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 2. Pipes and fittings with smooth external surface, Type A
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