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image.pngHong Kong Service Hotline00852 - 23418781
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image.pngCompany email:treasureislandint@yahoo.com.hk
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Treasure Island International Development Ltd.


Hong Kong company

Address: 3/F, Viet Luen  Factory Building,126 Wai Yip Street, Kwun Tong, Kowloon,Hong Kong

Telephone:(852)2341 8781

fax:(852)2790 7492

 

domestic company
Address: Building A7, Second Industrial Zone, Fuwei Community, Fuyong Town, Baoan District, Shenzhen
Telephone:(0755)2734 8831

fax:(0755)2734 8315

URLen.treasureislandint.com




创宝教你认识国标防火等级

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创宝教你认识国标防火等级

date:2018-02-05 00:00 source:http://en.treasureislandint.com click:

创宝教你认识防火材料等级 防火等级主要有5个:A 级:不燃性建筑材料,几乎不发生燃烧的材料。
A1级:不燃,不起明火
A2级:不燃,要测量烟,要合格。
B1级:难燃性建筑材料:难燃类材料有较好的阻燃作用。其在空气中遇明火或在高温作用下难起火,不易很快发生蔓延,且当火源移开后燃烧立即停止。
B2级:可燃性建筑材料:可燃类材料有一定的阻燃作用。在空气中遇明火或在高温作用下会立即起火燃烧,易导致火灾的蔓延,如木柱、木屋架、木梁、木楼梯等。
B3级:易燃性建筑材料,无任何阻燃效果,极易燃烧,火灾危险性很大。
另外,根据不同的标准,防火材料等级的划分也不一样:
DIN4102:A1、A2、B1、B2、B3
EN13501-1:A1、A2、B、C、D、E、F

tag:国标防火

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