GB/T 7991.7-2019
ActiveTest method of viterous and porcelain enamels—Part 7：Determination of coefficient of mean lincar thermal expansion
搪玻璃层试验方法 第7部分：平均线热膨胀系数的测定
Application Summary AI generated
This standard specifies a test method for determining the mean linear thermal expansion coefficient of vitreous and porcelain enamel coatings. It is applied in the chemical and pharmaceutical industries to evaluate the thermal compatibility between enamel layers and metal substrates in glass-lined equipment, such as reactors and storage tanks. The test ensures that the enamel will not crack or detach due to differential expansion during temperature changes in manufacturing or service.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.