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: 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: The lifting efficiency is twice as high as that of rectangular air duct during construction.
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
A: With the same plate thickness and pipe diameter, the spiral duct has high strength.
B: The air duct is round in shape and beautiful in appearance.
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: 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.
A: High efficiency construction, used in large projects with short construction period.
B: Mechanized production, fast and efficient.
C: The number of connecting flanges is small, and the lifting connection workload is reduced by about 50%.
D: Single lifting point for small diameter spiral air duct, fast and efficient lifting.
E: There is no need for processing procedures on the construction site, and on-site operators and management procedures are reduced.
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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