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Spiral duct has a wide range of applications. Air supply and return pipe of purification system, industrial air supply and exhaust ventilation pipe, air suction and exhaust pipe of environmental protection system, mine gas drainage pipe, mine adhesive cloth air duct, etc.

螺旋風管常用的4種加固方法，風管內支撐加固的排列應整齊、間距應均勻對稱，應在支持件兩端的風管受力（壓）面處設置專用墊圈。

For the four commonly used reinforcement methods of spiral air duct, the support reinforcement in the air duct shall be arranged neatly, the spacing shall be uniform and symmetrical, and special gaskets shall be set at the stress (pressure) surface of the air duct at both ends of the support.

1、框架加固法：即采用輕鋼龍骨加固。

1. Frame reinforcement method: light steel keel reinforcement is adopted.

2、抱合加固法：即采用輕鋼龍骨加固，使用在拉桿加固和框架加固無法應用的某些特殊管道上，如900彎管、三通管、悶頭管等。

2. Embracing reinforcement method: light steel keel reinforcement is adopted, which is used on some special pipes that cannot be used for tie rod reinforcement and frame reinforcement, such as 900 elbow, tee pipe, bulkhead pipe, etc.

3、防下垂加固法：它用于特殊管道的加固，如變經管道加固和迂回管道加固。

3. Anti sagging reinforcement method: it is used for the reinforcement of special pipelines, such as variable pipeline reinforcement and circuitous pipeline reinforcement.

4、拉桿加固法：它是采用鋼彩、套管加固，通常使用在500Pa以下的正壓加固。

4. Tie rod reinforcement method: it adopts steel color and casing reinforcement, and usually uses positive pressure reinforcement below 500pa.

這是按其用途定下的名稱，但它又可用于其它地方，甚至用來排水，排液體或作容器，這就不能叫它風管。按構造來命名，應管它叫螺旋咬縫薄壁管，由于主要用金屬做的又管它叫螺旋咬縫金屬管。如果按材料歸類命名，大概可有這幾個名：鍍鋅（鐵）螺旋管、不銹鋼螺旋管、鋁螺旋管，或為了區別于現有不銹鋼管，可管它叫超薄不銹鋼管，因它可用0.3毫米甚至更薄的不銹鋼帶卷制而成。

This is the name set according to its purpose, but it can be used in other places, even for drainage, liquid discharge or container, so it can't be called air duct. Named according to the structure, it should be called spiral seamed thin-walled pipe. Because it is mainly made of metal, it is also called spiral seamed metal pipe. If the material is classified and named, there may be several names: galvanized (iron) spiral pipe, stainless steel spiral pipe, aluminum spiral pipe, or in order to distinguish it from the existing stainless steel pipe, it can be called ultra-thin stainless steel pipe, because it can be rolled with 0.3mm or even thinner stainless steel strip.

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The above is the detailed introduction of Jinan ventilation duct. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.qdqrsj88.com