1.1 本规范涵盖矿物纤维（岩石、熔渣或玻璃）金属网覆盖和工业型毡和毡式管道保温层（通常直径为24英寸（610毫米）或更大）的组成、尺寸和物理特性。其用于在低于环境温度至0°F的温度下工作的冷却表面(−18°C）和在高达1200°F（649°C）的温度下运行的大直径容器和储罐伸缩缝上的加热表面。实际使用温度以外的具体应用应由制造商和买方商定。 1.2 为了获得令人满意的性能，应在低于环境温度的应用中使用正确安装的保护性蒸汽缓凝剂或屏障，以减少水分/水蒸汽通过或围绕绝缘层向较冷表面移动。不使用蒸汽缓凝剂可能会导致绝缘和系统损坏。参考实践 C921 帮助材料选择。尽管蒸汽缓凝剂性能不属于本规范的一部分，但本规范中要求的性能 C1136 与应用程序或性能相关。 1.3 毡内纤维的方向主要平行于受热面。本规范不包括预制管道和储罐包裹隔热层，其中隔热层已切割和制造，以提供垂直于受热面的纤维方向。 1.4 本标准无意提供小时额定消防系统的性能要求。有关适当的系统，请咨询制造商。 1.5 仅当买方在合同或美国订单中规定时，见本标准章节修改的补充要求。 S、 美国国防部、海军部和海军系统司令部使用的军事规范。 1.6 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。 1.7 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。 1.8 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 the composition, dimensions, and physical properties of mineral fiber (rock, slag, or glass) metal mesh covered and industrial type blanket and blanket-type pipe insulation (typically on 24 in. (610 mm) diameters or larger)). Its use is for cooled surfaces at temperatures operating below ambient to 0°F (−18°C) and on heated surfaces on expansion joints to large diameter vessels and tanks operating at temperatures up to 1200°F (649°C). Specific applications outside the actual use temperatures shall be agreed upon between the manufacturer and purchaser. 1.2 For satisfactory performance, properly installed protective vapor retarders or barriers shall be used on below ambient temperature applications to reduce movement of moisture/water vapor through or around the insulation towards the colder surface. Failure to use a vapor retarder can lead to insulation and system damage. Refer to Practice C921 to aid material selection. Although vapor retarder properties are not part of this specification, properties required in Specification C1136 are pertinent to applications or performance. 1.3 The orientation of the fibers within the blanket is primarily parallel to the heated surface. This specification does not cover fabricated pipe and tank wrap insulation where the insulation has been cut and fabricated to provide fiber orientation that is perpendicular to the heated surface. 1.4 This standard does not purport to provide the performance requirements of hourly-rated fire systems. Consult the manufacturer for the appropriate system. 1.5 See Supplementary Requirements for modifications to sections in this standard only when specified by purchaser in the contract or order from the U.S. Military specifications utilized by the U.S. Department of Defense, Department of the Navy, and the Naval Systems Command. 1.6 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.7 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. 1.8 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.