Steel is a kind of non-combustible building material, with seismic, bending characteristics, in practical application, if the steel structure without any protective measures, usually lose the bearing capacity in 450~650℃ temperature, great deformation, unable to use, and no protection of steel structure refractory limit is about 15 minutes, so usually in the steel structure outside spray fire coating to increase the fire limit time of steel structure, Nanjing Smart can provide BS 476-20 & BS 476-22 refractory test, Tel.: +86 25-8658 3475
BS 476-22 Fire tests on building materials and structures — Part 22: Methods for determination of the fire resistance of non-loadbearing elements of construction
Classification of fire-retardant coating for steel structure:
Ordinary steel structure fire retardant coating and special steel structure fire retardant coating;
Indoor and outdoor steel structure fireproof coating;
Water-based type and solvent-based steel structure fire-retardant coating;
Expansive and non-expansive steel structure coating;
Indoor water-based non-expansion steel structure fire retardant coating BS 476-22 Test time:
According to the different requirements of the customers, the BS 476-22 refractory test time is: 30 minutes, 60 minutes, 90 minutes, 120 minutes...
Indoor water-based non-expansion steel structure fire-proof coating BS 476-22 test sample:
For details, please consult Nanjing SMART Company, Tel: +86 25-8658 3475
Indoor water-based non-expansion steel structure fire retardant coating BS 476-22 test requirements:
Integrity requirements:
If the cotton pad is ignited, or the backfire surface is burned for more than 10 seconds, it is considered to lose integrity;
During the test, the 6mm diameter rod can pass through the crack into the furnace, and the rod can pass through not less than 150mm along the crack length; or the 25mm diameter rod can pass through the crack, the specimen is considered to lose integrity;
Thermal insulation requirements:
The average temperature rise of the backfire surface exceeds the 140 degrees Celsius of the initial temperature of the sample surface, or the temperature rise at any point of the backfire surface is considered to lose thermal insulation.
Related reading:
EN 45545-2 R1 fire test: https://www.fire-test.com/newsinfo/6992951.html
Code for labeling of fire retardant coating for steel structure & principle of fire insulation: https://www.fire-test.com/newsinfo/6323753.html
Nanjing Smart Contact information:
Tel.: +86 25-8658 3475 +86 25 8658 3465
URL: www.fire-test.com www.firete.com
Email: info@fire-test.com
Wechat: firetesting or 177 1418 9018
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Testing to：
Fire standard
