GB/T 45342-2025

Vitreous and porcelain enamels—Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply—Requirements and testing

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