ISO 12992:2017规定了一种测试方法，用于测量厚度小于等于3 mm的薄膜和片材形式的垂直定向塑料试样在小点燃火焰下的火焰蔓延性能。

ISO 12992:2017 specifies a test method for measurement of flame spread properties of vertically oriented specimens of plastics in the form of film and sheet, 3 mm or less thickness, subjected to a small igniting flame.