The length of Dongguan spiral duct can be set according to which users' needs
The length of the Dongguan spiral duct can be set according to the needs of the user, reducing the connection of the duct and reducing the leakage point. In addition, the spiral duct can be connected with a flange, so that the leakage is less, and the reduction of the leakage reduces the daily operating costs and energy consumption. The seam of the spiral duct is circumferential, and the strength of the joint is much higher than the strength of the radial straight seam. Therefore, the spiral duct can ensure no cracks at the joint at 1.5 times the working pressure. The strength is high, so the specification also stipulates that the thickness of the spiral duct can be appropriately reduced by 10% to 15% compared with the general circular duct, and the distance between the support and hanger of the spiral duct can be longer than that of the general duct.
The seam of Dongguan spiral duct is circumferential. The strength of the seam is much higher than the strength of the radial straight seam, so it can be guaranteed that the seam does not crack at 1.5 times the working pressure. Because its raw material is galvanized strip Compared with the entire galvanized steel sheet, the price is lower, and its factory production and standardization of specifications make the cost lower than that of rectangular ducts. In addition, because of its lower support and hanger requirements, less installation work, so The total cost is lower. Because the four corners of the rectangular duct are prone to 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 due to its high strength. Therefore, the low-frequency noise caused by duct vibration is smaller, the air flow performance is good, the system pressure drop is small, and the daily operation system consumes less power.