1.1 本规范规定了由聚丙烯材料制成的壁板产品的材料、冲击强度、外观、表面火焰蔓延和抗风负荷的要求和试验方法。还提供了表明符合本规范的方法。 1.2 本产品中聚丙烯再生塑料的使用应符合第节的要求 4. . 1.3 根据本规范生产的壁板应根据制造商针对待安装特定产品的安装说明进行安装。 注1: 应从制造商处获得有关侧线维护的信息。 1.4 以英寸-磅为单位的数值应视为标准值。括号中给出的国际单位仅供参考。 1.5 以下预防性警告仅适用于试验方法部分，第 6. 本规范: 本标准并非旨在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、健康和环境实践，并确定监管限制的适用性。 注2: 没有已知的ISO等效于本标准。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification establishes requirements and test methods for materials, impact strength, appearance, surface flame spread, and wind load resistance of siding products manufactured from polypropylene material. Methods of indicating compliance with this specification are also provided. 1.2 The use of polypropylene recycled plastic in this product shall be in accordance with the requirements in Section 4 . 1.3 Siding produced to this specification shall be installed in accordance with manufacturer’s installation instructions for the specific product to be installed. Note 1: Information with regard to siding maintenance shall be obtained from the manufacturer. 1.4 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information purposes only. 1.5 The following precautionary caveat pertains to the test method portion only, Section 6 of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 2: There is no known ISO equivalent to this standard. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.