The manufacturing and processing of ventilation pipes, especially for some small and medium-sized enterprises and handmade companies, is not easy to survive for a long time. Because we are sure that the development trend of a company is inseparable from the development trend of corporate culture and brand strategy between the two. Although the core of today's air duct is still sheet iron, there are many shortcomings in engineering construction and maintenance due to the environmental protection, life limit, waterproof, sound insulation and noise reduction, load and other aspects of the air duct.

这就造成了大型商场一定一种新的商品来改进这一难点，新型不锈钢风管的展现，恰好习惯大型商场的要求，在根据许多工程项目应用及实践经验后，逐渐的被投资人房地产商所承担。

This creates a new commodity in large shopping malls to improve this difficulty. The display of new stainless steel duct is just used to the requirements of large shopping malls. According to the application and practical experience of many engineering projects, it is gradually undertaken by investors and real estate developers.

山东通风管道

Shandong ventilation pipeline

风管大型商场上按材料一般分成三类：热镀锌不锈钢风管、不锈钢板不锈钢风管及其复合型不锈钢风管。在其中，不锈钢风管品质不错，适用范围强，但价钱高。如今大型商场上较广的不锈钢风管是镀锌钢板的。镀锌钢板不锈钢风管，基础是不锈钢板不锈钢风管的特点，但是价钱相对性要是不锈钢风管的三分之二甚至更低。复合型不锈钢风管一般应用在外部自然环境比较一般，对风管规定不太高的场地。由于白铁皮非常容易在各种各样自然环境下产生化学变化，导致浸蚀、锈蚀。

According to the materials, the air ducts in large shopping malls are generally divided into three categories: hot dip galvanized stainless steel air ducts, stainless steel plate stainless steel air ducts and composite stainless steel air ducts. Among them, the quality of stainless steel duct is good, the scope of application is strong, but the price is high. Nowadays, the wider stainless steel air duct in large shopping malls is made of galvanized steel. Galvanized steel stainless steel air duct is based on the characteristics of stainless steel plate and stainless steel air duct, but the price relativity is two-thirds or even lower than that of stainless steel air duct. The compound stainless steel air duct is generally used in the site where the external natural environment is relatively general and the air duct regulations are not too high. Because the white iron sheet is very easy to produce chemical changes in a variety of natural environments, resulting in corrosion and corrosion.

山东通风管道而锌在干躁的空气中几乎不产生变化。在湿冷的空气中，锌表层会形成细腻的碱式碳酸锌膜。不锈钢风管关键是在风管白铁皮上镶上一层锌，对白铁皮具有维护的实际效果。锌涂层经不锈钢钝化、上色或涂敷护光剂后，能明显发展其防护力和装饰艺术。

However, zinc hardly changes in dry air. In the humid and cold air, fine basic zinc carbonate film will be formed on the surface of zinc. The key of stainless steel air duct is to insert a layer of zinc on the white iron sheet of the air duct, which has the actual effect of maintenance. After passivating, coloring or applying light protecting agent on stainless steel, zinc coating can obviously develop its protection and decorative art.