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What is the thickness of the national standard FRP ventilation duct?
Plate thickness of organic glass fiber reinforced plastic air duct in medium and low pressure system (mm)
Diameter d of circular duct or length b of rectangular duct.
wall thickness
D(b)≤200
2.5
2003.2
400D4.0
630D4.8
1000D6.2
Table 4.2.2-4 Thickness of Inorganic FRP Pipe for Medium and Low Pressure System (mm)
Diameter d of circular duct or length b of rectangular duct.
wall thickness
D(b)≤300
2.5~3.5
3003.5~4.5
5004.5~5.5
10005.5~6.5
15006.5~7.5
D(b)>2000
7.5~8.5
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