DB52T 743-2012 金属冶炼行业 自吸过滤式防尘口罩

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1、ICS13.340.30C73DB52贵州省地方标准DB52/T743－2012金属冶炼行业自吸过滤式防尘口罩Non-poweredair-purifyingdustmaskformetalsmeltingindustry2012-02-28发布2012-03-28实施贵州省质量技术监督局发布DB52/T743－2012目次前言...............................................................................III1范围.................................

2、.............................................12规范性引用文件....................................................................13术语和定义........................................................................14分类、级别和标记..................................................................24.1分类

3、..........................................................................24.2级别..........................................................................24.3标记..........................................................................25技术要求...........................................

4、...............................35.1一般要求......................................................................35.2高低温适应性..................................................................35.3滤尘效率......................................................................35.4滤烟效率............

5、..........................................................35.5吸气阻力......................................................................35.6呼气阻力......................................................................35.7呼气阀气密性...........................................................

6、.......45.8泄漏率........................................................................45.9死腔..........................................................................45.10视野.........................................................................45.11质量..............................

7、...........................................55.12连接强度.....................................................................55.13容尘性能.....................................................................55.14耐辐射热性能.................................................................56测试方法..

8、...................