GB/T 30583-2026Specification for the post weld heat treatment of pressure equipment (English PDF)

3 Terms, definitions and symbols

4 Basic process

5 Equipment, instruments and temperature-measuring devices

6 Technical preparation

7 Heating and temperature control

8 Temperature measurement

9 Soaking

10 Report on the post-weld heat treatment

11 Evaluation of the effect of the heat treatment

Foreword

This document was issued on 28 January 2026 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and has been in force since 1 August 2026.

It replaces GB/T 30583-2014.

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

Classification: ICS 25.200, CCS J 36.

3 Classification and status

GB/T 30583-2026 is classified under ICS 25.200, in the field of manufacturing engineering. 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 J 36. 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.