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flexible air duct, 1. Diameter available:100 150 200 300 350 400 450 500 600 800 1000mm, 2. Length available: 5m,10m,20m,3 - details see: https://www.machineto.com/2013-new-steel-ring-fire-resistance-flexible-air-duct-10248162

flexible air duct

Air duct pipe outlet duct air duct cleaning exhaust duct outlet duct flexible ventilation pipe

Ventilation Pipe parameters:

Model	Size (mm)	Deviation
Pipe diameter(mm)	150 300 400 450 500 600 800 1000~2000	0±6
Pipe length(mm)	5 10 20 30	0±150

Pipe Diameter(mm)	100m wind resistance(N·S 2 /M 8 )	Wind rate
300	≤1728.0	≤5.0
400	≤410.0	≤5.0
500	≤134.0	≤5.0
600	≤54.0	≤5.0
800	≤13.0	≤5.0

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Supply:postive pressure air duct , negotive pressure exhaust flexible air pipe, T-piece air exhaust flexible pipe, Y-piece air duct, ect kinds of air ducts available, welcome to shandong china coal