标 准 编 号：DIN 3230-4-1977 简体中文标题：阀门交货技术条件.饮用水装置的阀门.要求和检验 繁体中文标题：阀门交货技术条件.饮用水装置的阀门.要求和检验 English Name：Technical Conditions of Delivery for Valves; Valves for Potable Water Service, Requirements and Testing...