GB 8624-2025 PDF English
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GB 8624: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB 8624-2025 | 470 | Add to Cart | Auto, 9 seconds. | Classification for burning behavior of building materials and products | Valid |
| GB 8624-2012 | 85 | Add to Cart | Auto, 9 seconds. | Classification for burning behavior of building materials and products | Valid |
| GB 8624-2006 | RFQ | ASK | 9 days | Classification for burning behavior of building materials and products | Obsolete |
| GB 8624-1997 | 199 | Add to Cart | 2 days | Classification on burning behaviour for building meterials | Obsolete |
| GB 8624-1988 | RFQ | ASK | 3 days | Classified method for burning behaviour of building materials | Obsolete |
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GB 8624-2025: Classification for burning behavior of building materials and products
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB8624-2025GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.220.50 CCS C 80 Replacing GB 8624-2012 Classification for burning behavior of building materials and products Issued on: DECEMBER 31, 2025 Implemented on: JANUARY 01, 2027 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3 Introduction... 5 1 Scope... 6 2 Normative references... 6 3 Terms, definitions, symbols and abbreviations... 7 3.1 Terms and definitions... 7 3.2 Symbols and abbreviations... 11 4 Classification and grades... 12 4.1 Classification... 12 4.2 Grades of burning behavior... 13 5 Burning behavior grading criteria... 13 5.1 Building materials and products... 13 5.2 Decorative materials and products... 26 5.3 Non-metallic materials and products for equipment and components... 28 6 Application of classification results... 29 7 Classification description, mark, and report... 30 7.1 Classification description... 30 7.2 Classification mark... 31 7.3 Classification report... 32 Classification for burning behavior of building materials and products1 Scope
This document specifies the classification and grades of the burning behavior of building materials and products, the criteria for determining burning behavior grades, the application of classification results, classification description, mark, and report. This document applies to the classification and determination of the burning behavior of building materials and products, decorative materials and products, and non-metallic materials and products used in equipment and devices. The burning behavior classification of other materials and products shall use this document as a reference.2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2406.2, Plastics - Determination of burning behaviour by oxygen index -- Part 2.Ambient-temperature test GB/T 2408, Plastics -- Determination of burning characteristics -- Horizontal and vertical test GB/T 5169.16, Fire hazard testing for electric and electronic products -- Part 16. Test flames -- 50W horizontal and vertical flame test methods GB/T 5454, Textiles -- Burning behaviour -- Oxygen index method GB/T 5455, Textiles -- Burning behaviour -- Determination of damaged length, afterglow time and after flame time of vertically oriented specimens GB/T 5464, Non-combustibility test method for building materials GB/T 8333, Test method for burning behavior of rigid cellular plastic -- Vertical burning method GB/T 8626, Test method of burning behavior for building materials GB/T 8627, Test method for density of smoke from the burning or decomposition of building materials GB/T 10294, Thermal insulation -- Determination of steady-state thermal resistance and related properties -- Guarded hot plate apparatus GB/T 10295, Thermal insulation -- Determination of steady-state thermal resistance and related properties -- Heat flow meter apparatus GB/T 11785, Reaction to fire tests for floorings -- Determination of the burning behaviour using a radiant heat source GB/T 14402, Reaction to fire tests for building materials and products -- Determination of the heat of combustion GB/T 16172, Test method for heat release rate and smoke production rate of building materials GB/T 17596, Textiles -- Commercial laundering procedure for textile fabrics prior to burning behavior testing GB 17927, Safety technical specification of flame resistance for furniture GB/T 20284, Single burning item test for building materials and products GB/T 20285, Toxic classification of fire effluents hazard for materials GB/T 27904, Testing method for fire characteristics of furniture and subassemblies exposed to flaming ignition source GB/T 30735, Test methods for external exposure of roofs and roof coverings to fire GB/T 34441, Upholstered furniture -- Assessment of burning behavior of mattress GB/T 40237, Test method for ignitability of foamed plastic -- Welding spark method GB/T 40238, Reaction to fire tests for building materials and products -- General rules for selection of substrates, conditioning and mounting of specimen GB/T 46980, Test method for fire resistance of photovoltaic modules3 Terms, definitions, symbols and abbreviations
3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 material SDR. Smoke density grade SMOGRA. Smoke growth rate index, m²/s² s. Smoke production characteristic grade t. Smoke toxicity grade tf. Duration of combustion, s THR600 s. Total heat release within 600 s after ignition, MJ TSP600 s. Total smoke production within 600 s after ignition, m² ΔT. Temperature rise, ℃ Δm. Mass loss rate, %4 Classification and grades
4.1 Classification 4.1.1 Classification of building materials and products The categories are as follows. - Flat materials and products. - Flooring materials and products. - Roof covering materials and products. - Thermal insulation materials and products for building. • Wall thermal insulation products; • Roof thermal insulation products; • Floor thermal insulation products; • Sandwich composite thermal insulation products; • Pipe thermal insulation products. In flat materials and products, those used for flooring and roofing shall be classified into the corresponding categories of flooring materials and products and roof covering materials and products, respectively. Flat materials and products, flooring materials and products, and roof covering materials and products used for building thermal insulation shall be included in the category of thermal insulation materials and products for ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
