GB 9644-1988
AbolishedUnplasticized polyvinyl chloride (PVC-U) pipes and fittings for drinking water supply--Extractability of lead，tin，cadmium and mercury occurring as impurities--Test method and permitted levels
硬聚氯乙烯(PVC-U) 饮水管材和管件 铅、锡、镉、汞的萃取方法及允许值
Application Summary AI generated
This standard specifies the test method for extracting lead, tin, cadmium, and mercury from unplasticized polyvinyl chloride (PVC-U) pipes and fittings intended for drinking water supply, and establishes the maximum permitted levels for these heavy metal impurities. It is applied in the quality control and safety assessment of PVC-U products used in potable water distribution systems, ensuring that the materials do not leach harmful levels of toxic metals into drinking water. The standard is relevant for manufacturers, testing laboratories, and regulatory bodies involved in the production, certification, and inspection of drinking water supply components.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.