The fire resistance of GB8624 B1 national standard is equivalent to the corresponding fire resistance level B or C in the EU EN13501-1 standard.
The EN13501-1 standard divides fire resistance ratings into seven levels: A1, A2, B, C, D, E, F. Among these, B/C levels correspond to National Standard GB8624 B1 level. Many exterior walls and building materials need to achieve a fire resistance rating of GB8624 B1. Nanjing Smart provides CNAS accredited GB8624 B1 level and EN13501-1 B/C test reports. For specific testing requirements, please consult Nanjing Smart Company at +86-25-8658 3475.
The latest version of EN13501-1 standard is EN13501-1:2018, EN13501-1 standard divides fire resistance into seven levels, namely: A1, A2, B, C, D, E, F or A1fl, A2fl, Bfl, Cfl, Dfl, Efl, Ffl, and EN13501-1 F grade is not allowed to be used on building products.
EN13501-1 Building materials fire resistance grade A1-F
EN13501-1 A1 class: tested according to EN ISO 1182 and EN ISO 1716 standards and meets the requirements.
EN13501-1 A2 class: tested according to EN ISO 1182, EN ISO 1716 and EN ISO 13823 standards and meets the requirements.
EN13501-1 B, C and D grades: tested according to EN ISO 13823 and EN ISO 11925-2 standards and meet the requirements.
EN13501-1 E grade: tested according to EN ISO 11925-2 standard and meets the requirements.
EN13501-1 F class: tested according to EN ISO 11925-2 standard but not in compliance with the requirements.
EN13501-1 ground covering material fire rating is divided into A1fl-Ffl
EN13501-1 A1FL: Tested according to EN ISO 1182 and EN ISO 1716 standards and meets the requirements.
EN13501-1 A2FL: Tested according to EN ISO 1182, EN ISO 1716 and EN ISO 9239-1 standards and meets the requirements.
EN13501-1 Bfl, Cfl, DFL: Test according to EN ISO 9239-1 and EN ISO 11925-2 standards and meet the requirements.
EN13501-1 EFL: Tested according to EN ISO 11925-2 standard and meets the requirements.
EN13501-1 FFL: Tested according to EN ISO 11925-2 standard but not in compliance.
The GB8624-2012 standard divides the material into four grades: A, B1, B2 and B3.
Class A-Non-combustible materials, Class B1-Flame-retardant materials, Class B2-Flammable materials, Class B3-Easily combustible materials. The national standard GB8624 B1 corresponds roughly to the European standard EN13501-1 B/C classes. The national standard GB8624 B1 also corresponds roughly to the European standard EN13501-1 D/E classes
GB8624-2012 general material combustion performance classification
B8624 A grade: The test is carried out according to GB/T 5464, GB/T 14402 and GB/T 20284 standards and the requirements are met.
GB8624 B1 grade: The test is carried out according to GB/T 20284 and GB/T 8626 standards and the requirements are met.
GB8624 B2 grade: The test is carried out according to GB/T 20284 and GB/T 8626 standards and the requirements are met.
GB8624 B3 grade: tested according to GB/T8626 standard but not in compliance with requirements.
GB8624-2012 Grading of combustion performance of floor covering materials
GB8624 A grade: The test is carried out according to GB/T 5464, GB/T 14402 and GB/T 11785 standards and the requirements are met.
GB8624 B1 grade: The test is carried out according to GB/T 11785 and GB/T 8626 standards and the requirements are met.
GB8624 B2 grade: The test is carried out according to GB/T 11785 and GB/T 8626 standards and the requirements are met.
GB8624 B3 grade: tested according to GB/T8626 standard but not in compliance with the requirements.
Nanjing Smart Contact Information:
Tel: +86-25-8658 3475
Web: www.fire-test.com
Email: info@fire-test.com
WeChat: 177 1418 9018 or firetesting
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