在美国,最近玻璃纤维风管的使用非常普及,一年施工的玻璃纤维风管为1500万平方米,每年以15％的增长率迅速增长。在日本,玻璃纤维风管采用也较广泛,在办公楼、无人管理商店,公寓、住宅、工厂等等都有许多施工实例。玻璃纤维风管增加得如此之快,原因是与钢板风管工程相比,具有施工费用较经济、耐久性好、吸音效率高、保温性能好等等的优点。特别是既不用铁皮又不用保温的玻璃纤维预制风管,在施工中省去了再卷保温材料的二次工作,只要把一张高密度的玻璃纤维板用简单的工具,在很短的时间内就能做成风管(圆风管是用一定尺寸的成型品简单加工而成)。这样,玻璃纤维风道的送 In the United States, the use of fiberglass air ducts has recently become very popular. The annual production of glass fiber air ducts is 15 million square meters, and it grows rapidly at a rate of 15% each year. In Japan, glass fiber ducts are also used widely. There are many construction examples in office buildings, unmanaged stores, apartments, houses, factories, and so on. The increase in glass fiber air ducts is so rapid because the advantages of economical construction cost, good durability, high sound-absorbing efficiency, and good thermal insulation performance are compared with the steel plate air duct engineering. In particular, prefabricated ducts made of glass fiber that do not use iron sheet or insulation do not need to be re-wound in the secondary work of the insulation material, so long as a high-density fiberglass board is used with simple tools, in a very short period of time. The air duct can be made (the round air duct is simply processed with a certain size of a molded product). In this way, the glass fiber duct is sent