Bengbu fire doors

 Bengbu fire doors --- Shenzhen Industrial Co., Ltd. proficient fire doors complete documents, priced at direct sales, installation of train Shenzhen fire doors, steel fire doors Shenzhen, Shenzhen glass fire doors, fire doors Class Shenzhen, the Shenzhen B fire doors , Mobile: 13728894133 Mobile: 13556866654 Contact: Miss first wide web site: http: //www.sztx88.com Website: http: //a13556866654.b2b168.com Free Phone: 4008884513 E-mail: 2540559416@qq.com Address: The quality of Bengbu fire retardant treated wood door Bao'an District of Shenzhen City Industrial Park Huangmabu direct impact on the wood fire doors fire protection, fire doors Beijing Great Wall in strict accordance with the norms of fire doors wood fire treatment. Specific fire-retardant treatment methods are as follows: FR flame retardant suitable for a variety of methods of fire-retardant wood treatment, treatment temperature is generally liquid at room temperature (20 to 40 degrees Celsius) is appropriate. Vacuum / pressure treatment, high production efficiency, product quality. GB8624 B1 level required to achieve the standard FR flame retardant is used in an amount generally dry 40-50kg / m3 (according to a flame retardant uniform soaked wood meter), the specific dosage and timber species, timber size, and flame retardants immersion depth. In general, for most timber, an aqueous solution concentration of 10-12% can be achieved GB8624 B1 FR flame retardant standard. For a few refractory wood species, such as white pine, you can use a higher concentration of flame retardants (typically 13-15%) and longer infusion time. Usually, the first vacuum time 30-45min (degree of vacuum 0.09-0.095 MPa), most hardwood (such as ash, birch, elm, basswood, etc.) pressing time 30-45min (pressure 1.2MPa), Korean pine infusion time 2-2.5h (pressure 1.4MPa). Bengbu fire doors due to many factors origin of the wood, while the heartwood distribution all affect the performance of impregnated wood, even if the same kind of wood may show a greater infusion performance difference, which is recommended for each batch of impregnated wood have carried out tests to ensure the necessary fire retardant drug loading, while avoiding unnecessary waste. To save a flame retardant, it is recommended planed timber or lumber, so that after finishing fire retardant treatment does not require too much allowance. In addition, the thickness of the larger timber member, does not have to be completely soaked wood, but usually only effective immersion depth of the flame retardant injection (net of the impact of processing) reaches 5-7mm can, at this time, we recommend using a higher concentration of fire retardant treatment solution. Bengbu fire doors