Products >> Ducts of ventilation >> Specification of spirally round duct
 
Center air-condition
product
 
 
 
 
   
   
 
中航大记 (Catic-Tai Kee)
● -
Standard thickness
Specification of spirally round duct
▲ -
Unregular thickness
Material
Galvanized steel
Stainless steel
Thickness(mm)
0.6
0.8
1.0
1.2
1.5
0.5
0.7
Model
SR
SR2C
SR
SR2C
SR
SR2C
SR
SR2C
SR
SR2C
SR
SR2C
SR
SR2C
Diameter
mm
inch
3"
●
●
4"
●
●
●
●
●
●
●
5"
●
●
●
●
●
●
●
6"
●
●
●
●
●
●
●
160
7"(177.2)
●
●
●
●
●
●
●
180
●
●
●
●
●
●
●
200
●
●
●
●
●
●
▲
▲
●
●
●
●
8"
●
●
●
●
●
●
▲
▲
●
●
●
●
9"(224)
▲
▲
●
●
●
●
▲
▲
▲
▲
●
●
250
▲
▲
●
●
●
●
▲
▲
▲
▲
●
●
10"
▲
▲
●
●
●
●
▲
▲
▲
▲
●
●
380
▲
▲
●
●
●
●
▲
▲
▲
▲
●
●
300
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
12"
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
12 3/8 "
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
14"
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
15"
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
400
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
16"
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
17 3/4 "
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
18"
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
500
▲
▲
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
20"
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
21 3/4 "
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
22"
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
24"
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
24 3/4 "
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
26"
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
28"
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
30"
●
●
●
●
▲
▲
▲
▲
▲
▲
●
●
800
▲
▲
●
●
●
●
▲
▲
▲
▲
●
●
32"
▲
▲
●
●
●
●
▲
▲
▲
▲
●
●
850
▲
▲
●
●
●
●
▲
▲
36"
●
●
●
●
▲
▲
40"
●
●
●
●
▲
▲
44"
●
●
●
●
●
●
48"
●
●
●
●
52"
●
●
●
●
56"
●
●
●
●
60"
●
●
●
●
80"
●
●