EN 15269-20:2009 门,百叶窗和可开窗组合,包括建筑五金元件的耐火性和/或烟雾控制试验结果的扩展应用.第20部分:铰接和枢轴钢材,木材和金属框的烟雾控制
Extended application of test results for fire resistance and/or smoke control for door, shutter and openable window assemblies, including their elements of building hardware - Part 20: Smoke control for hinged and pivoted steel, timber and metal framed gl