by Chris Devers
GB 8624-1997 requirements for fire prevention materials
Common variety Normal Name (English) Normal No. Standard Issued Release Date Common
Date Standards Common text Foreword This standard is GB8624-88 revision. Non-equivalent in technical content material, utilizing the German standard
DIN4102-81 Component. The revision, compared with the GB8624-88, the addition of A-level composite (sandwich) supplies, and according to my
Nation-particular circumstances, an enhance of the certain uses of flooring, curtains and curtain variety textiles, wire and cable casing
Class plastic supplies and pipe insulation foam employed specified. If the specific use of supplies as
Wall or ceiling supplies used, nevertheless should be Chapter 4 of the normal provisions of Chapter 5 of the inspection and grading.
This standard from the efficient date of the original GB8624-88 shall be invalid. The People’s Republic of China Ministry of Public Security
This normal is raised. This common by the National Fire Protection Standardization Technology Committee Sub-Committee under the jurisdiction of the seventh.
The standard Ministry of Public Safety of Sichuan Fire Research Institute is accountable for drafting.
Main drafters of this normal: Qian Jianmin, Ma Xianglin, Lu National Development.
The normal initial released in February 1988.
The People’s Republic of China national standard
GB 8624-1997 Classification flammability of creating supplies
Instead of GB 8624-88 Classification on burning behaviour for developing supplies
1 Subject Matter and Scope This normal specifies the combustion properties of materials evaluation and classification standards.
This common applies to all kinds of industrial and civil engineering structures used in a assortment of decorative materials and gear
Repair components. two Normative references Following requirements contain provisions which, by means of reference in this regular, constitute the standard provisions. The normal
Time of publication, the editions indicated had been valid. All requirements are topic to revision, the parties need to discover the normal so that
With the possibility of the most recent version of the following criteria.
GB/T2406-93 Test technique for flammability of plastic oxygen index
GB/T2408-80 Test approach for flammability of plastic the level of combustion
GB/T4609-84 Test technique for flammability of plastic vertical burning
GB/T5454-85 burning properties of textile fabrics Determination of oxygen index
GB/T5455-85 Determination of vertical flame retardant textile fabrics technique
GB/T5464-85 not flammable building materials test methods
GB/T8332-87 foam combustion behavior of horizontal combustion
GB/T8333-87 challenging foam combustion vertical burning test strategies
GB/T8625-88 flammability for building materials test approach
GB/T8626-88 materials flammability test strategies
GB/T8627-88 combustion or decomposition of materials test methods for smoke density
GB/T8629-88 test used in the family textile washing and drying procedures
GB/T11785-89 paving Crucial Radiant Flux from a radiant heat source technique
GB/T14402-93 Test technique of heat burning constructing supplies
GB/T14403-93 combustion heat test techniques for constructing materials
three level of flammability of constructing components and name
Level of flammability of constructing components and names in Table 1.
Table 1 Combustion level and name
-Level name A noncombustible components B1 flame retardant supplies B2 combustible materials B3 flammable supplies Bureau of Technical Supervision 1997-04-04 1997-10-01 authorized the implementation of
GB 8624-1997 4 non-combustible type material (A Grade)
four.1 A homogeneous material level
By GB/T5464 test, the fuel properties to be accomplished:
A) the furnace typical temperature rise of not much more than 50
B) the sample continued to burn an average of no a lot more than 20s
C) The typical mass loss rate of the sample does not exceed 50%.
four.2 A class of composite (Sandwich) materials
Meet the following requirements of the material, its combustion properties as A-level.
A) by GB/T8625 testing, every single specimen, the average remaining length of 35cm (including any of the specimens
The remaining length of> 20cm), and the average gas temperature of every single test peak 125 , the sample on the back with out any fuel
Burning phenomenon B) by GB/T8627 test, the smoke density rating (SDR) 15
C) by GB/T14402 and GB/T14403 test, its thermal worth four.2MJ/kg, and specimen
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