GB/T 22073-2025General requirements for industrial thermal turbines (English PDF)

3 Terms and definitions

4 Symbols and abbreviations

5 Enquiry and bidding

6 Turbines

7 Driven machines, gear units and couplings

8 Auxiliary equipment

9 Lubricating oil and control oil systems

10 Governing and protection systems

11 Special tools

12 Inspection and testing

13 Preparation for transport and storage

14 Foundation

15 Site installation and commissioning

16 Contract documents

Foreword

This document was issued on 2 December 2025 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 July 2026.

It replaces GB/T 22073-2008.

The document is under the responsibility of the China Electrical Equipment Industry Association.

Classification: ICS 27.040, CCS K 54.

3 Classification and status

GB/T 22073-2025 is classified under ICS 27.040, in the field of energy and heat transfer 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 K 54. 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 China Electrical Equipment Industry Association, which is the body that maintains it and that will answer a formal question about its interpretation.