螺旋风管是用金属带料卷制成螺旋形咬缝的薄壁管，圆形，无焊接，不漏气，不漏水，多用于送风和散装物料输送，代替传统的白铁管（即手工咬缝铁管）。是风管的一种，全机制，直管无需手工敲打。
Spiral air duct is a thin-walled pipe with spiral seam made of metal strip coil. It is round, non-welded, non-leaking and non-leaking. It is mostly used for air supply and bulk material transportation instead of traditional white iron pipe (i.e. manual seam-biting iron pipe). It is a kind of air duct, full mechanism, straight pipe does not need to be knocked by hand.
其主要用途如下：
Its main uses are as follows:
(1)送风，包括通气，如送鲜风和排气，这个范围很广，如工厂车间，生产场地空气，由于有害气体产生需要排出室外，又需要把室外空气输送室内。这时就要使用流量大而压力小的空气输送管道，螺旋风管就适用，一般情况下使用镀锌铁管，有腐蚀性及特别潮湿场所使用不锈钢管。
(1) Air supply, including ventilation, such as fresh air supply and exhaust gas, covers a wide range of areas, such as factory workshops and production sites. Because of the generation of harmful gases, it needs to be discharged outdoors, and outdoor air needs to be conveyed indoors. At this time, it is necessary to use air conveying pipelines with large flow and low pressure. Spiral air ducts are most suitable. Generally, galvanized iron tubes are used, and stainless steel tubes are used in corrosive and especially humid places.
(2)送冷风。常见的是空调的管道，这种管道需要加保温材料。螺旋风管可内贴保温材料，外表看来美观。
(2) cold air supply. The most common is the central air-conditioning pipeline, which requires insulation materials. The spiral air duct can be insulated with heat preservation material and has a beautiful appearance.
(3)排油烟。饭店、酒楼、宾馆的厨房均有大量油烟产生，需要排出，使用圆形的风管就是油烟囱。在这里，螺旋风管该叫做油烟管。
(3) Fume exhaust. The kitchens of restaurants, restaurants and hotels all have a lot of oil fumes, which need to be discharged. The use of circular air ducts is the oil chimney. Here, the spiral duct should be called lampblack.
(4)除尘。有些工厂生产车间很多尘埃，需要专门的除尘装置，其中风流量较大的管道，可使用螺旋风管。(5)散装物料输送。有些工厂的生产过程中，需要输送松散的颗粒，特别是比重不大的如发泡塑料粒之类的使用螺旋风管造价低、效果好。
(4) dust removal. In some factories, there is a lot of dust in the workshop, and special dust removal devices are needed. The spiral duct can be used in the pipeline with larger air flow. (5) Bulk material transportation. In the production process of some factories, loose particles need to be transported, especially those with small proportion, such as foamed plastic particles, which use spiral air duct with low cost and good effect.
产品特点与手工敲制的传统白铁管比较，机制的螺旋风管具有以下优点：
Compared with the traditional white iron pipe made by hand, the spiral air duct with mechanism has the following advantages:
(1)密封性好。(2)强度与刚性均好。
(1) Good sealing. (2) Both strength and rigidity are good.
(3)通风阻力小，通风噪声小，圆管优于方管。
(3) Ventilation resistance is small, ventilation noise is small, circular pipe is better than square pipe.
(4)安装方便，连接点少。
(4) Easy to install and few connecting points.
(5)档次高，外表美观。
(5) High grade, beautiful appearance.
使用材料
Materials used
材质常用镀锌铁带（俗叫星铁），不锈钢带，软铝带。材料厚度：0.31.2毫米材料宽度：125毫米制管直径φ125φ1500毫米（直径与厚度适当配合），无级选择。
Material commonly used galvanized iron strip (commonly known as star iron), stainless steel strip, soft aluminum strip. Material Thickness: 0.3 to 1.2 mm Material Width: 125mm Tube Diameter 125 to 1500mm (Diameter and Thickness Match Appropriately), Stepless Selection.
通风工程降低造价方法
Cost Reduction Method for Ventilation Engineering
由于螺旋风管有骨（螺旋形咬缝）可提高强度30%，故可选用较薄的材料，比如0.8毫米的厚度可改为0.6毫米。
Because the spiral duct has bone (spiral bite) which can increase the strength by 30%, thinner materials can be selected, such as 0.8 mm thickness can be changed to 0.6 mm.
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