UL 790 | UL Standards & Engagement | UL Standard
2022年2月18日 · ul 790 Standard Test Methods for Fire Tests of Roof Coverings UL Standard Edition 9 Published Date: February 18, 2022 ANSI Approved: February 18, 2022 DOD …
屋顶覆盖物UL 790火灾试验测试等级有什么？ - 知乎专栏
屋顶覆盖物也称屋顶材料，一般用来保护屋顶甲板，在火灾情况下能提供防火保护的覆盖材料。常用的测试标准有ul 790，astm e108和en 13501-5。南京睿督为您解析ul 790的测试等级有哪些 …
UL 790: Fire Tests of Roof Coverings (Building Integrated ... - Intertek
There are three classes of fire exposure: Class A roof coverings are effective against severe fire test exposures. Class B roof coverings are effective against moderate fire test exposures and …
Revisions: This Standard contains revisions through and including October 10, 2008. This revision of ANSI/UL 790 is being issued to reflect the reaffirmation of ANSI approval of the Standard. …
Fire tests of roof coverings | Virtual Community - UL
UL 790 Standard for Fire Tests of Roof Coverings. This Standard outlines test methods for measuring the relative fire characteristics of roof coverings when exposed to fire sources …
UL 790-2022-2-18 - 道客巴巴
2022年4月1日 · ul 355 1996 ninth edition, dated february 星级： 44 页 ul107标准屋顶覆盖材料火灾试验方法ul标准20190328第四版 星级： 42 页 ul790 屋顶材料火灾试验标准试验方法 翻译 …
UL 790-2022 屋面覆盖材料耐火性的试验 标准全文
3 天之前 · ul 790-2022的标准全文信息,1.1 这些要求涵盖了暴露于模拟火源（火源来自安装覆盖物的建筑物外部）的屋顶覆盖物的相对防火特性测量。 它们适用于按预期应用时安装在可燃或 …
Roof Shingle Fire Rating Tests & Standards, UL 790 & ASTM E-108
Roof covering packaging that encloses shingles or other roofing that have a fire rating will display the level of fire or wind resistance rating of the materials. UL 790 is a quality assurance service …
屋顶覆盖物UL 790火灾试验测试等级有什么？-南京睿督科技有限 …
屋顶覆盖物也称屋顶材料，一般用来保护屋顶甲板，在火灾情况下能提供防火保护的覆盖材料。常用的测试标准有ul 790，astm e108和en 13501-5。南京睿督为您解析ul 790的测试等级有哪 …
Overview of UL 790: Fire Tests of Roof Coverings - cedur.com
What Is UL 790? UL 790 is a widely-used and recognized fire rating system that was developed to help measure and assess the fire-resistance of roofing materials. Here’s how it works: Each …