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See Chinese contents: GB/T 5988-2022 GB/T 5988-2022: Refractory products - Determination of permanent change in dimensions on heating
This Document specifies the principle, equipment, specimens, test steps, result calculation and test report of the test method for permanent change in dimensions on heating of dense shaped refractory products and shaped insulating refractory products. This Document is applicable to the determination of permanent in dimensions on heating of dense shaped refractory products and shaped insulating refractory products.
