在不增加任何压降的情况下，相同的安装空间内直径为200mm的圆形管道可取代250×150mm的矩形管道。在不增加额外安装空间的前提下，数条平行的圆形管道可取代扁平矩形管道。考虑了所有的因素，在绝大多数情况下，圆形管道所占用的空间都要少于矩形管道。对同样的压力特性，数条圆形管道的安装空间常常与一条矩形管道的的安装空间相同或更少。许多矩形管道系统安装时需要4螺栓系统，因而在管道的各个方向增加40~80mm。

Without increasing any pressure drop, the circular pipe with a diameter of 200mm can be replaced by a 250 * 150mm rectangular pipe in the same installation space. Without additional installation space, several parallel circular pipes can replace flat rectangular pipes. Considering all the factors, in most cases, the space occupied by the circular pipe is less than that of the rectangular pipe. For the same pressure characteristics, the installation space of several circular pipes is often the same or less than the installation space of a rectangular pipe. Many rectangular pipe systems need 4 bolts when they are installed, thus increasing 40~80mm in all directions of the pipeline.

（4）压降低

(4) reduction of pressure

众所周知圆形风管的风阻比矩形风管的风阻要小得多。

It is well known that the wind resistance of the circular duct is much smaller than that of the rectangular duct.

（5）精密的咬口成型工艺

(5) precise bite forming process

进口设备所采用的模具均为特种钢材结构，即使使用了三五年，其压制模具的表面仍保持不变，使得镀锌钢板的表面不受损伤，大大的延长了风管的使用寿命，同时接缝均匀平整、咬口紧密、连接力强、密封性好。

The moulds used in the imported equipment are all special steel structures. Even if they are used for 35 years, the surface of the pressing die remains unchanged. The surface of the galvanized steel plate is not damaged, which greatly prolongs the service life of the pipe. At the same time, the joint is uniform and smooth, the bite is tight, the connecting force is strong and the sealing is good.

（6）精巧的螺旋压制楞筋工艺使螺旋风管具有承受压力的最佳强度

(6) the sophisticated spiral pressing technology can make the spiral air pipe have the best strength to bear pressure.

增加螺旋型楞筋后，咬口潜缝厚度是管体的四倍，管道的刚性非常大，显示出坚固的优越性，能承受最大的压力负荷而无损变形

When the spiral rib is added, the thickness of the bite seam is four times that of the tube body. The rigidity of the pipe is very large, which shows the strong superiority and can withstand the maximum pressure load without damage.

  

  

（7）用材少

(7) less timber

相同截面积时，长宽比为1:3的矩形风管周长比螺旋风管的周长长40%，用材省;同理而言，由于螺旋风管周长短，保温用材也可相应减少。

In the same section area, the circumference of the rectangular wind pipe with the ratio of length and width to 1:3 is 40% longer than that of the spiral duct, and the material can be saved. In the same way, the heat insulation material can be reduced accordingly as the circumference of the spiral pipe is short.

  

  

（8）管路布局优美、立体感强

(8) the pipeline layout is beautiful and the three-dimensional sense is strong

当管道作为一种建筑特点而必须暴露时，优美典雅的螺纹风管将是最佳之选。

When pipeline is exposed as a building feature, elegant and elegant thread air pipe will be the best choice.