1.1 本规范涵盖买方规定的用于屋面或防水膜系统或制造商规定的用沥青或精制煤焦油饱和的编织粗麻布。 1.1.1 沥青饱和麻布 应与沥青基层水泥混合使用；典型的是符合规范的拖地沥青 D312/D312M , D449/D449M 或适当的含溶剂沥青材料。 1.1.2 煤焦油饱和麻布 应与煤焦油基水泥一起使用；典型的是符合规范的煤焦油沥青 D450/D450米 或适当的含溶剂沥青材料。 1.2 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.3 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 covers woven burlap fabrics, saturated with either asphalt or refined coal-tar, as specified by the purchaser, for use in the membrane system of roofing or waterproofing or as specified by the manufacturer. 1.1.1 Asphalt-saturated burlap fabric shall be used with asphalt base plying cement; typical ones are mopping asphalts conforming to Specifications D312/D312M , D449/D449M , or appropriate solvent-bearing bituminous materials. 1.1.2 Coal-tar-saturated burlap fabric shall be used with coal-tar base plying cements; typical ones are coal-tar pitches conforming to Specification D450/D450M , or appropriate solvent-bearing bituminous materials. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3 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.