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ASTM C553 商用和工业用矿物纤维毡隔热的标准规范
日期:2012-02-13 21:41
o reduce movement of 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 retarders are not part of this specification, properties required in Specification C1136 are pertinent to application or performance.
1.4 This standard does not purport to provide the performance requirements of hourly-rated fire systems. Consult the manufacturer for

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