螺旋风管主要用于联通两地之间的空气流通，起到通风透气的作用。目前市面上使用最广泛的就是螺旋风管。

The spiral air duct is mainly used for air circulation between China and China, and plays a role of ventilation and ventilation. At present, the most widely used market is spiral air duct.

种类

type

螺旋风管市场上按材质一般分为三类：镀锌螺旋风管、不锈钢螺旋风管以及复合螺旋风管。其中，不锈钢风管，适用性强，但价格高。目前市场上流通最广的螺旋风管是镀锌板的。镀锌板螺旋风管，基本是不锈钢螺旋风管的特性，但是价格相对只有不锈钢风管的三分之二甚至更低。复合螺旋风管一般应用在外界环境较为普通，对风管要求不太高的场所。

The spiral wind pipe market is generally divided into three types according to its material: galvanized spiral air pipe, stainless steel spiral air duct and composite spiral air duct. Among them, stainless steel air duct is highly applicable, but the price is high. At present, the most widely circulated spiral pipes in the market are galvanized sheets. The spiral duct of galvanized steel plate is basically a stainless steel spiral duct, but the price is only 2/3 or even lower than that of the stainless steel air duct. Composite spiral air duct is commonly used in places where the external environment is more common and the requirements for wind pipes are not too high.

特点

Characteristic

由于铁皮容易在各种环境下发生化学反应，造成腐蚀、生锈。而锌在干燥的空气中几乎不发生变化。在潮湿的空气中，锌表面会生成致密的碱式碳酸锌膜。螺旋风管主要是在风管铁皮上镀上一层锌，对铁皮起到保护的作用。锌镀层经钝化处理、染色或涂覆护光剂后，能显著提高其防护性和装饰性。

Because iron sheets are prone to chemical reactions in various environments, they cause corrosion and rust. Zinc hardly changes in dry air. In moist air, a dense zinc carbonate film is formed on the surface of zinc. The spiral duct is mainly plated with zinc on the iron sheet of the wind pipe, which plays a protective role on the iron sheet. Zinc coating is passivated, dyed or coated with light retaining agent, which can significantly improve its protective and decorative properties.