NEN 7100-1969 Code of practice on installations for drinking-water with unplasticized PVC-pipes《饮用水用不增塑PVC管的安装规程》.pdf

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JUS G C6 506-1991 Plastics Fittings from unplasticized polyvinyl chloride for water supply Symbols and terms《塑料 给水用不增塑聚氯乙烯管道配件 符号和术语》.pdf

NEN 7010-1968 van ongeplasticeerd polyvinylchloride bestemd voor de landbouw《农业用不增塑聚氯乙烯光滑排水管》.pdf

SANS 11-2007 Unplasticized poly(vinyl chloride) (PVC-U) components for external rainwater systems《外部雨水系统用不增塑聚氯乙烯（PVC U）组件》.pdf

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