DIN EN 1736:2009 制冷系统和热泵.软管元件、隔振器、膨胀节和非金属管.要求、设计和安装
Refrigerating systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements, design and installation; English version of DIN EN 1736:2009-02