1.1本分类涵盖了根据耐久性特征对墙面覆盖物的分类，即根据其在使用中的可用性，认识到某些墙面覆盖物主要是为了装饰效果而设计的，而其他墙面覆盖物也旨在实现高可用性。 1.2以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3本标准用于测量和描述材料、产品或组件在受控条件下的加热和燃烧性能，但其本身并不包括在实际火灾条件下对材料、产品或组件进行火灾危险或火灾风险评估所需的所有因素 1.4本标准无意解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This classification covers the classification of wall covering by durability characteristics, that is, according to its serviceability in use, recognizing that certain wall covering is designed primarily for decorative effect, while other wall covering is also designed to achieve a high degree of serviceability. 1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This standard is used to measure and describe the properties of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions 1.4 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.