搪瓷制品和瓷釉 未处理饮用水供应系统用内外表面搪瓷的阀门和压力管配件 要求和试验方法
Vitreous and porcelain enamels—Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply—Requirements and testing
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发布于：2025-02-28
实施于：2025-09-01
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Vitreous and porcelain enamels—Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply—Requirements and testing