The manufacture of spiral air ducts is highly automated and the production speed is very fast. General air ducts can produce 20 to 40 meters per minute. Compared with the whole galvanized steel sheet, its raw material, galvanized strip steel, has a lower price, and its factory The standardization of production and specifications makes the cost of spiral air ducts lower than that of rectangular air ducts; in addition, due to less support and hanger requirements and less installation workload, the total cost of spiral air ducts is lower. Because the four corners of the rectangular air duct are prone to turbulence, which reduces the effective flow area, the spiral air duct has good air mobility and large effective flow area, so the secondary noise of the spiral air duct is small. Therefore, the low-frequency noise caused by the vibration of the air duct is smaller, the air flow performance is good, the system pressure drop is small, and the daily operation system consumes less power. The spiral air duct market is generally divided into three categories according to the material: galvanized spiral air duct, fabric air duct spiral air duct and composite spiral air duct. Among them, the spiral air duct has better quality and strong applicability, but the price is high. At present, the most widely circulated spiral air duct on the market is galvanized sheet. Galvanized sheet spiral air duct is basically the characteristics of the fabric air duct spiral air duct, but the price is only two-thirds or even lower than the spiral air duct. Composite spiral air ducts are generally used in places where the external environment is relatively common and the requirements for air ducts are not too high. Because iron sheets are prone to chemical reactions in various environments, causing corrosion and rusting. Zinc, on the other hand, hardly changes in dry air. In humid air, a dense basic zinc carbonate film is formed on the zinc surface. The spiral air duct is mainly coated with a layer of zinc on the iron sheet of the air duct to protect the iron sheet. The protective and decorative properties of zinc coating can be significantly improved after passivation treatment, dyeing or coating with light protectant. The era of rapid growth of the spiral duct machine market has passed. Not to mention doubling the sales of spiral duct machine manufacturers, it is not easy to maintain the status quo. How can spiral duct machine manufacturers be prepared for development in peacetime Woolen cloth? Therefore, the most important thing at this stage is to find ways to reduce costs and maintain the profitability of the enterprise to tide over the difficulties. To reduce costs is to radically eliminate all waste from the value chain. The current waste in the production of spiral duct machine manufacturers is still everywhere, but we often turn a blind eye. The discovery of waste needs to be clearly seen through scientific management. It is necessary to split the enterprise value chain and list each activity in detail. , and then analyze each activity. Spiral ducts are some small enterprises and workshop-style enterprises, and the viability of such enterprises will not last long. Because we firmly believe that the development of an enterprise is inseparable from the development of its corporate culture and brand strategy. Although the current dominant is still iron sheet air ducts, but due to environmental protection, life, moisture-proof, sound insulation, load-bearing and other reasons of these air ducts, there are many defects in construction and maintenance. This has led to the need for a new product in the market to improve this problem. The emergence of the new type of spiral duct just meets the needs of the market. After a large number of engineering applications and practical proofs, it is gradually accepted by investors and developers. .
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