The strength of spiral pipe ring seam and joint is much higher than that of straight seam radial, so it can ensure the seam under 1.5 times of working pressure without cracks. Compared with the whole piece of galvanized steel, the raw material galvanized steel strip has low price, factory production and standardized specifications, which makes the cost lower than rectangular pipe. In addition, due to the small number of supports and hangers required and small installation work, the total cost is relatively low. Because the four corners of the rectangular air duct are easy to produce turbulence, the effective flow area is reduced, the air flow is good, and the effective flow area is large, so the secondary noise of the product is small because of its high intensity. Therefore, the lower the low-frequency noise caused by the duct vibration, the better the air flow performance, the smaller the pressure drop of the system, and the smaller the power consumption of the daily operation system. The undercut is formed by the air tube forming machine and rolled into a circular tube along the spiral involute track. Meanwhile, the undercut seam is compressed and finally cut according to the required length. Since its introduction, it has been widely used in shipbuilding, ventilation, air conditioning, purification, bridge dust removal, airport, tunnel and other construction industries with its excellent performance and low operating cost. The most common source of hot and cold air is central air conditioning, which needs to be insulated. The insulation material can also be pasted inside, so that the air duct has a beautiful spiral shape, and the ceiling can be avoided, thus reducing the project cost. Shandong spiral air duct production is highly automated, the production speed is very fast, the general air duct can produce 20 ~ 40 meters per minute, because of its raw material galvanized steel strip, galvanized steel plate, the price is low, coupled with its factory production and standardization, the cost is lower than rectangular pipe.

　　如果在使用的技術和設備,配備其他過程相應的加工設備,空調管道處理進展的過程和質量會提高,但仍分別多步處理屬性的過程中,還需要大量的人力旋轉操作在多個設備,規模,風管的加工效率和質量仍處于一個較低的階段。幸運的是，采用普通板法蘭連接技術后，空調風道的加工過程不僅少了工序，而且省去了一些手工操作工序，還需要下料、切角、加固、普通板法蘭成形、角接咬合和裝配等工序。

　　If advanced technology and equipment are used and processing equipment corresponding to other processes are equipped, the process and quality of air conditioning pipeline processing progress will be improved. However, in the process of multi-step processing of attributes, a lot of manpower is still needed to rotate operation in multiple equipment, scale, and processing efficiency and quality of air duct are still in a low stage. Fortunately, after using the common plate flange connection technology, the processing process of air conditioning duct not only reduces the working procedure, but also saves some manual operation procedures, and also requires cutting, corner cutting, reinforcement, common plate flange forming, corner joint and assembly and other processes.

　　螺旋風管具有精密的壓制工藝，使山東螺旋風管能夠承受更強的壓力。潛在接頭的厚度是管體的四倍。管子的剛性非常大，顯示出堅固性的優勢。這大大降低了生產成本。此外,我們需要告訴你的是山東螺旋風管生產過程是非常復雜的,它通常是由特殊鋼材,所以保證質量的自然的,一般可以用好幾年了,他還能保證變形的長期使用,大大延長管道的使用壽命,為我們的生產具有重要的現實意義。

　　The spiral air duct has a precise pressing process, which enables the spiral air duct in Shandong Province to withstand the strongest pressure. The thickness of the potential joint is four times that of the pipe body. The rigidity of the pipe is very large, showing the advantage of firmness. This greatly reduces the cost of production. In addition, what we need to tell you is that the production process of Shandong spiral air duct is very complex. It is usually made of special steel, so it can guarantee the natural quality, which can be used for several years generally. It can also guarantee the long-term use of deformation, greatly extend the service life of the pipeline, which has important practical significance for our production.