DIN EN ISO 11177-2016 釉瓷和搪瓷.用于未经处理的饮用水供应的内外搪瓷阀门和压力管道配件.质量要求和试验(ISO 11177-2016).德文版本EN ISO 11177-2016
Vitreous and porcelain enamels - Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply - Quality requirements and testing (ISO 11177:2016); German version EN ISO 11177:2016