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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.

這就造成了大型商場一定一種新的商品來改進這一難點，新型不銹鋼風管的展現，恰好習慣大型商場的要求，在根據許多工程項目應用及實踐經驗后，逐漸的被投資人房地產商所承擔。

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.

山東通風管道

Shandong ventilation pipeline

風管大型商場上按材料一般分成三類：熱鍍鋅不銹鋼風管、不銹鋼板不銹鋼風管及其復合型不銹鋼風管。在其中，不銹鋼風管品質不錯，適用范圍強，但價錢高。如今大型商場上較廣的不銹鋼風管是鍍鋅鋼板的。鍍鋅鋼板不銹鋼風管，基礎是不銹鋼板不銹鋼風管的特點，但是價錢相對性要是不銹鋼風管的三分之二甚至更低。復合型不銹鋼風管一般應用在外部自然環境比較一般，對風管規定不太高的場地。由于白鐵皮非常容易在各種各樣自然環境下產生化學變化，導致浸蝕、銹蝕。

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.

山東通風管道而鋅在干躁的空氣中幾乎不產生變化。在濕冷的空氣中，鋅表層會形成細膩的堿式碳酸鋅膜。不銹鋼風管關鍵是在風管白鐵皮上鑲上一層鋅，對白鐵皮具有維護的實際效果。鋅涂層經不銹鋼鈍化、上色或涂敷護光劑后，能明顯發展其防護力和裝飾藝術。

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.