1、經濟性：
1. Economy:
A：根據規范，同等管徑，板厚降低10-15%。（主材造價降低10-15%）
A: According to the specification, the plate thickness is reduced by 10-15% for the same pipe diameter. (Cost of main materials reduced by 10-15%)
B：同等條件下滿狀輔材（吊鍵等）結果簡單，數量少，安裝輔材造價降低30%
B: Under the same conditions, the results of full-shape auxiliary materials (hanging keys, etc.) are simple, the quantity is small, and the cost of installation auxiliary materials is reduced by 30%
C：施工時吊裝效率比矩形風管提高一倍。
C: The lifting efficiency is twice as high as that of rectangular air duct during construction.
D：同等條件下，可將舉行風管低速送排風變為高速送排風，系統設計可減少風管總量，不僅經濟，而且節約空間
D: Under the same conditions, the low speed air supply and exhaust of the air duct can be changed into the high speed air supply and exhaust. The system design can reduce the total amount of air duct, which is not only economical, but also saves space
2、可能性：
2. Possibility:
A：同樣板厚及同等管徑下，螺旋風管強度高。
A: With the same plate thickness and pipe diameter, the spiral duct has high strength.
B：風管外表為圓形，外形美觀。
B: The air duct is round in shape and beautiful in appearance.
C：同等截面下，圓形風管比矩形風管結構張力合理，大幅度提高風管剛性，明顯降低顫震噪音。
C: Under the same section, the structural tension of circular air duct is more reasonable than that of rectangular air duct, which greatly improves the rigidity of air duct and significantly reduces the chattering noise.
D：同等長度下，法蘭連接數量少，蜜蜂性能優于矩形風管，使系統通風質量大大提高。
D: Under the same length, the number of flange connections is small, and the bee performance is better than the rectangular air duct, which greatly improves the ventilation quality of the system.
3、快捷性：
3. Fastness:
A：率施工，使用于工期短的大型項目。
A: High efficiency construction, used in large projects with short construction period.
B：機械化制作，快速。
B: Mechanized production, fast and efficient.
C：連接法蘭數量少，吊裝連接工作量減少約50%。
C: The number of connecting flanges is small, and the lifting connection workload is reduced by about 50%.
D：小管徑螺旋風管單吊點，吊裝快速。
D: Single lifting point for small diameter spiral air duct, fast and efficient lifting.
E：無需施工現場加工工序，減少現場作業人員及管理程序。
E: There is no need for processing procedures on the construction site, and on-site operators and management procedures are reduced.
F：與矩形風管相比，配套異形管件標準化程度高，吊裝簡單，差錯幾率大大降低。
F: Compared with rectangular air duct, the supporting special-shaped pipe fittings are highly standardized, easy to lift, and greatly reduce the probability of error.
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