Antistatic air duct

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Antistatic air duct

Antistatic air duct

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Introduction a: L = 3m, the longitudinal seams more than one; L = 5m longitudinal seams when more than 4; L = 10m when more than two longitudinal seams b: D = 300,400,500 mm, the circumferential seams more than two D = 600,800,1000 circle seams when

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Introduction

a: L = 3m, the longitudinal seams more than one;
L = 5m longitudinal seams when more than 4;
L = 10m when more than two longitudinal seams
b: D = 300,400,500 mm, the circumferential seams more than two
D = 600,800,1000 circle seams when more than three
2Flange length
L1=150mmL2=200mm
3.The bending deformation of the end ring is less than or equal to 1.2% of the original diameter, the end of the section to the duct ring line is not perpendicular of not more than 4?.br /> a:Rings at both ends at the end of lap 200mm onwards, the duct inner circumferential seams and duct installation batten intersection hanging, hanging hung between an inner one, the spacing is 2 times Day
Distance (300mm) rings securely installed, seamless style.
b: L = 3 m or 5 m, the rings mounted reversing duct does not exceed 1/24th of the circumference of a circle 1, L = 10 m, the amount of twist rings mounted to the circumference of the duct does not exceed 1/16.
5.Ventilation Performance
a: air duct drag one thousand meters, kilometers, air leakage rate in accordance with Table 3
table3
Duct diameter mm one hundred meters Drag N? S2/m8 one hundred meters leakage rate%
300 ≤1728.0 ≤5.0
400 ≤410.0 
500 ≤134.0 
600 ≤54.0 
800 ≤13.0 
Note
L=10mL=20mL=30mL=40mL=50m
b: resistance to negative pressure in Table 4, the test does not produce negative pressure resistant duct disjointed, coated cloth tear, and the inner pressure of the separation, the joint opening and other anomalies. Duct diameter shrinkage in accordance with Table 4 provides:

table4
Duct diameter mm pitch mm inner resistance to negative resistance Pa duct diameter shrinkage%
300
500 150 ≥4500 5
600
800 100 ≥4000 3
7 coated cloth duct meet MT383-1995 standard.

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