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Spiral air duct is a kind of spiral seam thin-walled pipe made of metal tape. Round, no welding, no air leakage, no water leakage. It is mainly used for air supply and bulk cargo transportation, replacing the traditional white iron pipe (i.e. manually seamed iron pipe). It is an air duct with full mechanism, and the straight pipe does not need to be knocked manually. Its main uses are as follows:

(1)空氣供給

(1) Air supply

包括通風，如新風的送風和排風，這個范圍很廣，如工廠、車間、生產現場的空氣，由于生產的有害氣體需要排到室外，同時也需要把室外的空氣送到室內。此時，采用大流量和低壓的空氣管道，螺旋風管合適，一般采用鍍鋅鐵管，腐蝕性和特別潮濕的地方采用不銹鋼管。

It includes ventilation, such as fresh air supply and exhaust, which covers a wide range, such as the air in factories, workshops and production sites. Because the harmful gas produced needs to be discharged outdoors, it also needs to send the outdoor air indoors. At this time, large flow and low-pressure air pipes are used, spiral air pipes are suitable, galvanized iron pipes are generally used, and stainless steel pipes are used in corrosive and particularly humid places.

(2)送風

(2) Air supply

把寒冷的空氣。常見的是空調管，需要添加保溫材料。螺旋風管可粘貼保溫材料，美觀大方。

Put the cold air. Common is the central air-conditioning pipe, which needs to add insulation materials. Spiral air duct can be pasted with thermal insulation materials, which is beautiful and elegant.

(3)排油煙

(3) Exhaust lampblack

餐廳、餐廳、酒店的廚房有大量的炊煙，需要排出，使用的是圓形風管的煙囪。在這里，螺旋管應該被稱為油煙。

There is a large amount of cooking smoke in the kitchen of restaurants, restaurants and hotels, which needs to be discharged. The chimney with round air duct is used. Here, spiral pipe should be called lampblack.

(4)除塵

(4) Dust removal

有些工廠車間粉塵較多，需要專門的除塵裝置。螺旋風管適用于空氣流量大的管道。

Some factory workshops have a lot of dust, so special dust removal devices are needed. Spiral air duct is suitable for pipes with large air flow.

(5)散貨運輸

(5) Bulk cargo transportation

在一些工廠的生產過程中，需要運輸松散的顆粒，特別是比重較小的顆粒，如泡沫塑料顆粒。螺旋風管成本低，效果好。

In the production process of some factories, it is necessary to transport loose particles, especially particles with small specific gravity, such as foam particles. Spiral air duct has low cost and good effect.

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