文档介绍：C 82 中华人民共和国国家标准 GB 12955— 2008 代替GB 12955-1991、GB 14101-1993 防火门 Fire resistant doorsets 2008-04-22发布 2009-01-01实施国家质量监督检验检疫总局国家标准化管理委员会发布 GB 12955-2008 I 目次前言................................................................................III 1范围................................................................................1 2规范性引用文件......................................................................1 3术语和定义..........................................................................1 4 ........................................................................2 ..................................................................2 ..............................................................2 ............................................................2 ..............................................................3 、标记....................................................................3 5要求..............................................................................4 ..........................................................................4 ..............................................................................5 ............................................................................6 ................................................................6 ......................................................................7 ..........................................................................7 ..........................................................................7 ..........................................................................8 ..........................................................................8 .........................................................................8 .........................................................................8 6试验方法....................................................