The fire-retardant board has played a great role in the construction and decoration. In recent years, the fire prevention problem in public places has been paid much attention. The following is the general knowledge about the types and fire-proof grades of the fire-retardant boards under construction.

The first type of flame retardant board is a kind of flame retardant board which is more resistant to the external environment. The primary effect is weather resistance, durability, steam treatment, high temperature resistance and boiling water resistance.

The second type of flame-retardant board is a kind of flame-resistant board which is more resistant to moisture. It can withstand short-time impregnation in cold water and can be used indoors at room temperature. It is generally used for furniture making and general construction.

The third type of flame retardant board is a water resistant flame retardant board that can withstand short-term hot water impregnation and long-term cold water impregnation.

The fourth type of fire-retardant board is a non-moisture-resistant flame-retardant board, which is generally used in indoor applications with a dry climate in the north, and is mainly used for general-purpose flame-retardant board materials, such as ash, oak, birch, poplar, and elm.

Qianshan flame retardant board features:

1The flame retardant plywood has low hygroscopicity, stable water absorption thickness expansion rate, excellent moisture-proof function, and does not affect secondary processing such as veneer and paint;

2 The release of free formaldehyde in the product is far lower than the national standard E1;

3 excellent flame retardant function, up to B1 level;

4 has high chemical stability and excellent aging resistance;

5 MOR, MOE, IB and other physical and mechanical functional indicators have reached the national standard requirements of Class A requirements;

6 flame retardant plywood itself is safe and environmentally friendly, and the incineration residue is non-toxic and non-polluting;

7 does not damage the veneerability, adhesiveness and machining function of the flame retardant plywood;

8 flame retardant plywood has excellent screw holding force and does not corrode metal links.

Classification of fire-retardant plywood fire rating

Class A: Non-combustible construction materials: information that does not occur incineration.

Class A1: Non-combustible, no open flame

Class A2: Non-combustible, to measure cigarettes, to be qualified.

Grade B1: Flame retardant, with good flame retardant effect. It is difficult to catch fire when exposed to fire in the air or under high temperature effect, and it is not easy to spread quickly, and the incineration stops immediately after the fire source is removed.

Class B2: Combustible building materials: Combustible materials have a certain flame retardant effect. In the air, when exposed to fire or under high temperature, it will immediately start to burn, which may lead to the extension of fire, such as wooden columns, wooden trusses, wooden beams, wooden stairs, etc.

Grade B3: Flammable construction materials: no flame retardant effect, easy to incinerate, and the fire is very dangerous.

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