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Burning behavior safety technical specification of thermal insulation materials and products for building
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Basic data
Standard ID: GB 46520-2025 (GB46520-2025)
Description (Translated English): Burning behavior safety technical specification of thermal insulation materials and products for building
Sector / Industry: National Standard
Classification of Chinese Standard: Q25
Classification of International Standard: 91.100.60
Word Count Estimation: 10,168
Date of Issue: 2025-10-05
Date of Implementation: 2026-08-01
Issuing agency(ies): State Administration for Market Regulation and Standardization Administration of China
GB 46520-2025: Burning behavior safety technical specification of thermal insulation materials and products for building
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 91.100.60
CCSQ25
National Standards of the People's Republic of China
Combustion performance of building insulation materials and products
Safety Technical Specifications
Published on 2025-10-05
Implemented on August 1, 2026
State Administration for Market Regulation
The State Administration for Standardization issued a statement.
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents".
Drafting.
Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.
This document was proposed and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China.
Combustion performance of building insulation materials and products
Safety Technical Specifications
1 Scope
This document classifies building insulation materials and products, and specifies the requirements, test methods, and judgment criteria related to fire performance and safety.
Then and the identifier.
This document applies to thermal insulation materials and products used for building wall, roof and floor insulation.
2 Normative references
The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.
For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.
This document.
GB/T 4132 Thermal Insulation Terminology
GB 8624 Classification of fire performance of building materials and products
GB/T 40248 Fire Safety Management of Densely Populated Places
GB 55037 General Code for Fire Protection of Buildings
3 Terms and Definitions
The terms and definitions defined in GB/T 4132, GB 8624 and GB/T 40248, as well as the following terms and definitions, apply to this document.
3.1
Thermal insulation materials and products used for building insulation.
3.2
homogeneous thermal insulation materials and products
Thermal insulation materials and products composed of a single material, or having a uniform density and composition within them.
3.3
Non-homogeneous thermal insulation products made of two or more adjacent layers of different components.
[Source. GB/T 4132-2023, 3.2.2, with modifications]
3.4
Thermal insulation materials and products whose main components are inorganic non-metallic materials.
3.5
Thermal insulation materials and products whose main components are organic polymer materials.
3.6
assemblyoccupancy
Indoor places where people gather.
......
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