According to the public expenditure, the notice content of implementing the national standard GB8624-2006 "Classification of Combustion Performance of Building Materials and Products" is due to the principle, structure and test method of the new GB8624-2006 and the old GB8624-1997. Great difference. According to the content of the notice, in order to ensure a smooth transition between the old and new standards system, the relevant national standards "Code for Fire Protection of Interior Decoration Design of Buildings" GB50222, "Code for Fire Protection Design of High-rise Civil Buildings" GB50045, "Code for Fire Protection of Building Design" GB50016 have not been completed. In the case of the material burning performance, the new version of GB8624-2006 can be temporarily referenced with the classification method of GB8624-1997. The original standard GB8624-1997 and the revised national current standard GB8624-2006 combustion performance classification, comparison and some examples are shown in the following table: Insulation material fire rating performance classification, comparison and some examples Judging from the implementation of the GB8624-2006 standard, there are problems such as the classification of combustion performance is too fine, and it does not match the current engineering construction in China. Therefore, the relevant departments made the third revision of the GB8624-2006 standard, namely GB8624-2012, which was released on December 31, 2012 and implemented on October 1, 2013. In the standard, the burning grade is specified: Class A is non-combustible material (product); B1 is flame-retardant material (product); B2 is combustible material (product); B3 is flammable material (product). Stainless Steel Flexible Hose,Stainless Steel Flex Hose,Flexible Hose Ss,Stainless Steel Flexible Hose Pipe Ningbo Safewell Plumbing Co., Ltd. , https://www.safewellbrass.com