GB/T 29761-2022Carbon fibre—Determination of sizing content (English PDF)

3 Terms and definitions

4 Principle

5 Test specimens

6 Conditioning

7 Test methods

8 Test report

Foreword

This document was issued on 11 July 2022 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 February 2023.

It replaces GB/T 29761-2013.

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

Classification: ICS 59.100.20, CCS Q 53.

About this edition

GB/T 29761-2022 is the current edition. It was issued on 11 July 2022 and has been in force since 1 February 2023, replacing GB/T 29761-2013.

GB/T 29761-2013 has been superseded: a specification that still cites it is citing a withdrawn edition.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/T 29761-2022 is classified under ICS 59.100.20, in the field of textile and leather technology. 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 Q 53. 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.