It is made of galvanized or bare steel strip of low
carbon steel and used for forming the grouting tube in pc structures.
Parameters for circular duct：(mm)
|
ID. |
50 |
60 |
65 |
75 |
90 |
100 |
105 |
115 |
125 |
130 |
|
OD. |
55 |
65 |
70 |
80 |
95 |
105 |
110 |
120 |
130 |
135 |
|
Deviation |
?.50 |
|
Thickness of standard steel strip |
0.30 |
|
Thickness of standard steel strip |
0.32 |
0.40 |
0.60 |
▓Note：Ducts with special specification not shown in the
table can be supplied as per actual requirement.
▓Subject to modification
Parameters
for Slab duct：(mm)
|
Short Axis |
Length |
22 |
22 |
22 |
22 |
25 |
25 |
25 |
25 |
|
Deviation tolerance |
+3/0 |
+3/0 |
|
Long Axis |
Length |
65 |
74 |
74 |
90 |
56 |
66 |
76 |
96 |
|
Deviation tolerance |
?/0 |
?/0 |
|
Thickness of steel strip |
0.30 |
▓The short side can be straight or curve, when the short
side is curve, the radius is the half of that along short axis.
▓Ducts with special specification not shown in the table
can be supplied as per actual requirement.
▓Subject to modification
