常熟市防火建材阻燃测试中心:

 UL 认证简称：

 UL认证是为市场得到具有相当安全水准的商品，为人身健康和财产安全得到保证作出贡献。就产品安全认证作为消除国际贸易技术壁垒的有效手段而言，UL为促进国际贸易的发展也发挥着积极的作用。

 UL 263建筑构件和材料－标准名称：

 UL 263 Fire Tests of Building Constriction and Material

 UL 263 建筑结构和材料的防火测试

 UL 263建筑构件和材料－标准范围：

 本防火测试使用与砖石建材和复合材料的结构部件的建筑料，包括承载构件和其他墙体及其天花板和地板的分区，柱，大梁，横梁，板梁和复合板和梁的组件。他们也适用于构成完整建筑物的其他配件和结构。

 UL 263建筑构件和材料－涵盖范围：jsgf19310zjh

 These fire tests are applicable to assemblies of masonry units and to composite assemblies of structural materials for building, including bearing and other walls and partitions, columns, girders, beams, slabs and composite slab and beam assemblies for floors and roofs, they are also applicable to other assemblies and structural units that constitute permanent integral parts of a finished building.

 The classifications for building construction and materials are intended to register performance during the period of fire exposure and are not intended to be interpreted as having determined their acceptability for use after fire exposure.

 These re are intended to evaluate the length of time that the types of assemblies specified in1.1 will contain a fire or retain their structural integrity, or both, dependent upon the type of assembly involved, during a predetermined test exposure. the test evaluates the assembly's resistance to teat. and in some instances to a hose stream. while carrying an applied load, if the assembly is load bearing.

 Under these re a specimen is subjected to a standard fire exposure controlled to achieve specified temperatures throughout a specified time period. In some instances ,the fire exposure may be followed by the application of a specified standard fire hose stream. This exposure by itself may not be representative of all fire conditions; conditions may vary with changes in the amount, nature, and distribution of fire loading, ventilation, compartment size and configuration, and heat sink characteristics of the compartment. These re provide a relative measure of fire performance of comparable assemblies under these specified fire exposure conditions. Any variation from the construction or conditions that are tested such as size. method of assembly, and materials ,may substantially change the performance characteristics of the assembly.

 UL 263建筑构件和材料－标准概述：

 根据标准规定的性能测试方法出具测试报告，报告中显示指定的时间下的耐火性能，如下：20min，30min，60min，90min或120min等等。测试报告应包括试验炉的温度测量，选定未暴露的面进行测量，其中也包括所有装备性能的观察和记录。