标 准 编 号：DIN 3230-5-1984 简体中文标题：交货技术条件.煤气管道和装置用阀.要求和检验 繁体中文标题：交货技术条件.煤气管道和装置用阀.要求和检验 English Name：Technical delivery conditions; valves for gas installations and gas pipelines; requirements and testing...