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GB/T 45924-2025Thin triple glazing (English PDF)

薄型中空玻璃

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

June 30, 2025

Implementation date

January 1, 2026

Scope

GB/T 45924-2025 is the English-translated version of 薄型中空玻璃.

GB/T 45924-2025 is the Chinese national standard covering a two-cavity insulating unit thin enough to fit an ordinary window frame, made with a film or a thin sheet dividing the cavity rather than a third full pane — the separator and the pressure equalisation hole that keeps the two cavities at the same pressure, the thickness and area limits, the dimensional deviations, the heat transfer coefficient, the inert gas leakage rate, and the impact resistance of the separator. First edition, under the China Building Materials Federation. In force from 1 January 2026. Issued on 30 June 2025, it has been in force since 1 January 2026.

Document preview — GB/T 45924-2025

National Standard of the People's Republic of China

ICS: 81.040.30
Classification: Q 33

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Ingredients1
5 Requirement2
5.1 General requirements2
5.2 Dimensions and their deviations2
5.3 Heat transfer coefficient2
5.4 Inert gas leakage rate2
5.5 Impact resistance of separation materials2
6 Test Method2
6.1 General requirements2
6.2 Dimensions and their deviations3
6.3 Heat transfer coefficient3
6.4 Inert gas leakage rate3
6.5 Impact resistance of separation materials3
7 Inspection Rules4
7.1 Inspection categories4
7.2 Batch and Sampling5
7.3 Decision Rules5
8 Packaging, marking, transportation and storage6
8.1 Packaging6
8.2 Sign6
8.3 Transportation7
8.4 Storage7
Appendix A (Informative) Structural Features and Configuration Examples of Thin Insulating Glass8
Appendix B (Normative) Test method for inert gas leakage rate of insulating glass9
B.1 Specimen9
B.2 Test equipment9
B.3 Test procedure10

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed by China Building Materials Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Architectural Glass (SAC/TC255).

This document was drafted by: China National Testing and Inspection Holding Group Co., Ltd., Fujian Gangda New Materials Technology Co., Ltd., Beijing University of Science and Technology, Qinhuangdao Glass Industry Research and Design Institute Co., Ltd., Ningbo Niruo Electronic Technology Co., Ltd., Guangdong Haikong Special Glass Technology Co., Ltd.

Co., Ltd., China Yaohua Glass Group Co., Ltd., Shandong Wensheng Glass Technology Co., Ltd., Chongqing Youyou Lihong Glass Co., Ltd., China Green Construction Jiangsu New Materials Co., Ltd., Niruo (Jiangsu) Electronic Technology Co., Ltd., and China Building Materials Inspection and Certification Group Qinhuangdao Co., Ltd.

The main drafters of this document are: Xu Wei, Wang Geng, Li Huanhuan, Yang Xuedong, Guo Wenren, Liu Dongyang, Zhang Xitao, Zhang Yuqi, Hu Keyin, Cao Zhenhu, Hu Shanshan, Deng Xiaohui, Dong Honglin, Cai Gen, Sun Shibing, Liu Chengxiong, Liu Yaru, Tang Zhongyan, Wang Peikai, Du Gangqiang, Wang Chuan, Li Jingtong, Kou Fei, Bao Ji, Cui Xinyu, Chen Zhibin, Lai Boyuan, Wen Jing, Huang Xinyi, Zhao Yong, Chen Fu, Jia Lidan, Hu Haohua, Gong Jian, Tu Hao, Wang Jianyu, Li Ming, Wu Peng. Thin insulating glass

1 Scope

This document specifies the materials, requirements, inspection rules, packaging, marking, transportation and storage of thin insulating glass, and describes the corresponding tests method.

This document applies to the design, production and delivery of thin insulating glass for building doors and windows.

2 Normative references

GB/T 2680

GB/T 9158-2015

GB/T 11944

GB/T 29739

GB/T 38214-2019

3 Terms and Definitions

The terms and definitions defined in GB/T 11944 and the following apply to this document.

3.1 Separator

Inorganic glass, polycarbonate, organic glass, polyester film with a thickness of no more than 3mm that acts as a gas chamber in multi-cavity insulating glass Membrane or other sheet or membrane materials.

3.2

Two-chamber gas-filled insulating glass with limited total thickness, maximum area, partition material thickness and heat transfer coefficient.

3.3

A through hole located on the partition material used to balance the air pressure between adjacent cavities of insulating glass.

4 Materials

Glass and other transparent (light) materials, partition materials, edge sealing materials, spacing materials and desiccant for thin insulating glass should meet Material requirements in GB/T 11944.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 29739

Editions of GB/T 45924

Edition	Title	Revision	Status
GB/T 45924-2025	Thin triple glazing	current edition	Current

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