(1)Introduction：

　　Composite air duct panel introduction：

　　Tianfon is the leading company at domestic, owns composite air duct foam panel continuous production line. The production line is raised by Tianfon researchers, and produced together with Tianfon machinery company. Through constant innovation, Tianfon composite air duct continuously updating, it is widely used in large public building stadiums .

　　Composite air duct application：

　　Mainly used at large air-conditioning and ventilation system (HVAC system) in public and civil buildings.

　　Air duct has the following categories:

　　?Double sided aluminum foil composite phenolic air duct introduction：

　　Double sided aluminum foil composite phenolic air duct is double sided aluminum foil with phenolic foam as core material, one-step-compositing through continuous producing line. Double sided aluminum foil is processed by anti-corrosion anti-bacterial and embossing, it is anti-corrosion and anti-oxidant, the core material phenolic is foam delicate, density uniform, it is Tianfon Energy-saving company the first generation air duct production.

　　Single sided steel sheet composite air duct

　　Double layer steel sheet composite air duct

　　Double layer steel sheet phenolic air duct is special ventilation product for subway, high end products. Modified phenolic foam board as the core material composed with two-sided steel sheet by continuous production line in one-time. Fire resistance is up to 120 minutes. It can be used in the projects that wind pressure is more than 2000PA.

　　Single embossed galvanized steel composite duct

　　单面压花镀锌铁皮复合酚醛风管是传统铁皮风管的新一代进化产品。风管板材外层为镀锌压花铁皮(钢板)，内层为镀膜亚光防腐铝箔，中间为酚醛泡沫夹芯复合而成。除具有传统铁皮风管钢度好、强度大的优点外，又具有阻燃保温吸音防噪等性能，且管道成型后不需要二次保温，克服了传统铁皮风管外保温层易破损的弱点，使用寿命更长，且美观大方。其生产和施工工艺同单面彩钢复合风管。

　　⑤复合聚氨酯风管

　　复合聚氨酯风管是以聚氨酯为原料，两面复合一定厚度的金属面板，采用先进的全自动生产线一次性发泡复合而成。由此制成的风管系统空气摩擦阻力小，导热系数低，弯曲强度高，绝热性能优异，从而降低冷量损失，管道内输送的空气温度及湿度能有效地保持原有水平，风管内外层的金属面板，形成稳定致密的保护层，使用寿命20年以上。

　　Composite air duct accessories

　To ensure installation safety and quality, we use professional flanges accessories for air duct installation. Please use Tianfon Composite Air Duct Panel and accessories together: good product, reasonable price and high quality.

　　Polyurethane air duct technology information

　　(2)Product Feature

　　1.No air leakage and no thermal bridge: compared with iron sheet air duct locking connection type, Tianfon air duct use polyurethane foam glue connection, all gap is filling with polyurethane foam. There is no air leakage, professional heat insulation flange prevent thermal bridge.

　　2.Effectively reduce sound pollution: Noise elimination theory of micro perforated panel，micro perforation by laser, effectively reduce noise, directly substitute muffler, vibration and echo are absorbed by embossed aluminum foil and polyurethane foam. Completely eliminate iron steel duct resonance effect and noise.

　　3.Shorten the construction period: light, integrated design and construction technology, shorten the construction period almost 1/5, compared with iron steel duct.

　　4.Energy-saving and insulation: thermal conductivity of PU air duct is only 0.020w/mk, compared with 0.047w/mk of rock wool, more than two times insulation effect of the same thickness;

　　5.Environment design: polyurethane sandwich panel is free of Freon and formaldehyde. Glass wool has carcinogen which leads to itching and swelling.

　　6.Free of maintenance and long life: Corrosion resistance to acid and alkali, ensure 20 years’ service life. Cut out of the cost for maintenance.

　　7.Graceful appearance: distinguish air duct manufacture processing and professional construction scheme and color is various.