GB/T 2423.68-2026Environmental testing — Part 2: Test methods — Test: Icing and melting cycle test (English PDF)

3 Terms and definitions

4 General description of the test

5 Test equipment

6 Test specimens

7 Initial measurement

8 Preparation before the icing test

9 Preconditioning

10 Arrangement of the test specimens

11 Icing test

12 Measurement of the degree of icing and recording of the conditions

13 Ice-melting test

14 Intermediate measurement

15 Icing and melting cycle

16 Final measurement

17 Information to be given in the relevant specification

18 Test report

Foreword

This document was issued on 2 July 2026 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and takes effect on 1 February 2027.

It is the first edition of this standard.

The document is under the responsibility of the Standardization Administration of China.

Classification: ICS 19.040, CCS K 04.

3 Classification and status

GB/T 2423.68-2026 is classified under ICS 19.040, in the field of testing. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.

Its Chinese Standard Classification code is CCS K 04. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.

The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.

The document is under the responsibility of the Standardization Administration of China, which is the body that maintains it and that will answer a formal question about its interpretation.