UL1820：压缩空气管耐火焰和烟雾性能的防火测试
日期:2011-01-28 00:00
UL 1820：压缩空气管耐火焰和烟雾性能的防火测试
UL 1820：Standard for Fire Test of Pneumatic Tubing for Flame and Smoke Characteristics
Abstract 摘要
This is a test method for determining values of flame propagation distance and optical smoke density for pneumatic tubing that is to be installed in ducts, plenums, and other spaces used for environmental air. The purpose of this test method is to determine whether the flame-propagation and smoke-generating characteristics of these tubes are in accorda
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