1、經(jīng)濟性：
1. Economy:
A：根據(jù)規(guī)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(jié)果簡單，數(shù)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(fēng)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(fēng)管低速送排風(fēng)變?yōu)楦咚偎团棚L(fēng)，系統(tǒng)設(shè)計可減少風(fēng)管總量，不僅經(jīng)濟，而且節(jié)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(fēng)管強度高。
A: With the same plate thickness and pipe diameter, the spiral duct has high strength.
B：風(fēng)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(fēng)管比矩形風(fēng)管結(jié)構(gòu)張力合理，大幅度提高風(fēng)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(shù)量少，蜜蜂性能優(yōu)于矩形風(fēng)管，使系統(tǒng)通風(fēng)質(zhì)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(shù)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(fēng)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(xiàn)場加工工序，減少現(xiàn)場作業(yè)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(fēng)管相比，配套異形管件標(biāo)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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