GB 25034-2020Gas-fired heating and hot water combi-boiler (English PDF)

3 Terms and definitions

4 Classification and models

5 Materials, construction and safety requirements

6 Performance requirements

7 Test methods

8 Inspection rules

9 Marking and instruction manual

10 Packaging, transport and storage

Foreword

This document was issued on 11 October 2020 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 November 2021.

It replaces GB 25034-2010.

Classification: ICS 91.140, CCS P45.

About this edition

GB 25034-2020 is the current edition. It was issued on 11 October 2020 and has been in force since 1 November 2021, replacing GB 25034-2010.

GB 25034-2010 has been superseded: a specification that still cites it is citing a withdrawn edition.

The interval between issue and effect is the transition period. It exists so that producers, laboratories and buyers can requalify products, revise procedures and use up documentation before the new text becomes the one that applies. The date on this page is the official one from the record of the Standardization Administration.

Classification and status

GB 25034-2020 is classified under ICS 91.140, in the field of construction materials and building. 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 P45. 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 prefix without a suffix marks a mandatory national standard: compliance is required by law for the products or activities within its scope, and a product that does not meet it may not lawfully be placed on the Chinese market.