Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for strength and leakage; English version of DIN EN 1507:2006-07
国外标准现行
标准号:DIN EN 1507-2006
标准名称: 建筑物通风.矩形面薄板金属送气管.强度和泄漏要求
英文名称:Ventilation for buildings - Sheet metal air ducts with rectangular section - Requirements for strength and leakage; English version of DIN EN 1507:2006-07