International Organization for Standardization (ISO)
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ISO 8497:1994
Scope
Specifies apparatus performance requirements, but does not specify apparatus design. Applies to circular pipes, generally operating at temperatures above ambient. The type of specimen, temperatures and test conditions to which the standard applies are specified in the standard in detail.
ISO 8497:1994 history
1994ISO 8497:1994 Thermal insulation; determination of steady-state thermal transmission properties of thermal insulation for circular pipes