1、消声性能；
1. Sound attenuation performance;
镀锌薄钢板风管：无消声性能，自身震动会产生声音，必须加装消声器。
Galvanized sheet steel air duct: no noise attenuation performance, self vibration will produce sound, so muffler must be installed.
无机玻璃钢风管：无消声性能，隔声性能优于镀锌薄钢板风管，必须加装消声器。
Inorganic glass fiber reinforced plastic duct: no noise attenuation performance, sound insulation performance is better than galvanized steel sheet duct, muffler must be installed.
复合玻纤板风管：其管壁是一种多孔性吸声材料，可省去专用消声器。
Composite fiberglass duct: its wall is a kind of porous sound-absorbing material, which can save the special muffler.
法瑞管：其管壁为柔性纤维织物，本身就是声音的不良导体和吸收体，自身不会产生声音，还可以一定程度上吸收设备噪声，随着管道的延长，效果更为明显，可省去专用消声器。
Farui pipe: the wall of the pipe is made of flexible fiber fabric, which is the poor conductor and absorber of sound. It will not produce sound, and can also absorb equipment noise to a certain extent. With the extension of the pipe, the effect is more obvious, and the special muffler can be omitted.
2、保温性能：
2. Thermal insulation performance:
镀锌薄钢板风管：导热系数很大(为60.4 W/m?K) ，无保温性能，必须另外加包保温层及保护层。
Galvanized sheet steel air duct: the thermal conductivity is very high (60.4 w / M? K), and it has no thermal insulation performance, so it must be additionally wrapped with thermal insulation layer and protective layer.
无机玻璃钢风管：导热系数大(为0.5W/m?K) ，无保温性能。
Inorganic FRP duct: high thermal conductivity (0.5W / M? K), no thermal insulation performance.
复合玻纤板风管：导热系数小(平均温度24℃时小于1 W/m?K) ，有一定保温性能，不加装保温。
Composite fiberglass duct: low thermal conductivity (less than 1 W / M? K at average temperature of 24 ℃), with certain thermal insulation performance, without thermal insulation.
济南风管加工
Jinan air duct processing
法瑞管：济南风管加工时，保温的目的在于防止能量流失及风管表面凝露。法瑞管反其道而行之，利用纤维织物本身的渗透性，在风管表面形成冷气层，使得管壁内外无温差，因而不会凝露，达到了普通风管采用大量保温材料所达到的同样的效果。
Farui pipe: when Jinan air duct is processed, the purpose of heat preservation is to prevent energy loss and condensation on the surface of air duct. Farui pipe works in the opposite way, using the permeability of the fabric itself to form a cold air layer on the surface of the air duct, so that there is no temperature difference between the inside and outside of the pipe wall, so it will not condense, achieving the same effect as ordinary air duct using a large number of thermal insulation materials.
3、防火性能
3. Fire performance
镀锌薄钢板风管：不燃，但其真正的防火性能视保温层而定。
Galvanized sheet steel duct: non combustible, but its real fire performance depends on the insulation layer.
无机玻璃钢风管：同镀锌薄钢板风管。
Inorganic FRP duct: the same as galvanized steel sheet duct.
复合玻纤板风管：外层为铝箔，以不燃性玻璃纤维棉板为基材，防火性能好。 法瑞管：布风管的防火特性取决纤维材质，法瑞管采用的是阻燃涤纶纤维，达到GB8624-2006 B级防火标准。（防火等级达到A级标准的材料，为玻璃纤维材料，不防凝露，抗老化能力差，寿命短，在空调场所不建议使用）
Composite fiberglass duct: the outer layer is aluminum foil, and the non combustible fiberglass cotton board is used as the base material, which has good fire resistance. Farui pipe: the fire resistance of air distribution pipe depends on the fiber material. Farui pipe is made of flame retardant polyester fiber, which meets the class B fire protection standard of GB8624-2006. (materials with fire grade up to grade A are fiberglass materials, no condensation resistance, poor aging resistance and short life, and are not recommended for use in air-conditioned areas).
4、防潮性能
4. Moisture resistance
镀锌薄钢板风管：易受潮腐蚀生锈。
Galvanized sheet steel duct: easy to be corroded and rusted by moisture.
无机玻璃钢风管：受原料配比的制约，其防潮性能的稳定性较差。
Inorganic glass fiber reinforced plastic air duct: restricted by the proportion of raw materials, the stability of its moisture-proof performance is poor.
复合玻纤板风管：无易腐材料和部件，但因其为多孔材料，在长期潮湿环境下不建议使用。
Composite fiberglass duct: no perishable materials and components, but because it is porous material, it is not recommended to use in long-term humid environment.
法瑞管：材料均为德国进口涤纶材料，防潮性能，在游泳馆、食品厂、纺织厂等高湿环境下可以长期使用。
Farui tube: the material is polyester imported from Germany, with excellent moisture resistance. It can be used for a long time in natatorium, food factory, textile factory and other high humidity environment.
5、强度
5. Intensity
镀锌薄钢板风管：强度较高，抗静压能力强。
Strong static pressure resistance, galvanized steel sheet, high strength.
无机玻璃钢风管：强度较高，抗冲击能力脆弱。
Inorganic glass fiber reinforced plastic duct: high strength, weak impact resistance.
复合玻纤板风管：能满足一般通风空调的承压要求，高可承受风压1500Pa。
Composite fiberglass board air duct: it can meet the pressure requirements of general ventilation and air conditioning, and can withstand the wind pressure of 1500pa.
法瑞管：柔性材料，耐压大于2000Pa。
Farui tube: flexible material, pressure greater than 2000Pa.
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