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Pre-Stressed Concrete Sheaths
Over 15 million meters of concrete sheaths have been produced and supplied to major highways and bridges. The pressure loading and water-tight properties all meet national standards.
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| Dia.(mm) |
Thick.(mm) |
Wt.(Kg/m) |
Dia.(mm) |
Thick.(mm) |
Wt.(Kg/m) |
| 16 |
0.25 |
0.14 |
75 |
0.30 |
0.64 |
| 20 |
0.25 |
0.16 |
80 |
0.30 |
0.64 |
| 23 |
0.25 |
0.18 |
85 |
0.30 |
0.75 |
| 30 |
0.30 |
0.25 |
90 |
0.30 |
0.80 |
| 42 |
0.30 |
0.26 |
95 |
0.30 |
0.90 |
| 45 |
0.30 |
0.28 |
100 |
0.30 |
1.00 |
| 50 |
0.30 |
0.32 |
105 |
0.30 |
1.10 |
| 55 |
0.30 |
0.33 |
110 |
0.30 |
1.20 |
| 60 |
0.30 |
0.36 |
115 |
0.30 |
1.30 |
| 65 |
0.30 |
0.53 |
120 |
0.30 |
1.40 |
| 70 |
0.30 |
0.55 |
125 |
0.30 |
1.50 |
| 72 |
0.30 |
0.58 |
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Hollow Slab Tubes
For use in reinforced concrete slabs, tubes were buried within the slabs, thus increasing the column spans and improving space utilization.
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| Diameter(mm) |
Thickness(mm) |
Pitch(10 mm) |
Weight(Kg/m) |
| 125 |
0.23 |
50 |
1.20 |
| 150 |
0.23 |
50 |
1.33 |
| 175 |
0.25 |
50 |
1.72 |
| 200 |
0.25 |
50 |
1.93 |
| 225 |
0.25 |
50 |
2.20 |
| 250 |
0.30 |
50 |
2.90 |
| 275 |
0.30 |
50 |
3.17 |
| 300 |
0.30 |
50 |
3.50 |
| 325 |
0.30 |
50 |
4.16 |
| 350 |
0.32 |
50 |
1.20 |
| 375 |
0.32 |
50 |
4.72 |
| 400 |
0.32 |
50 |
5.00 |
| 425 |
0.32 |
50 |
5.42 |
| 450 |
0.35 |
50 |
6.16 |
| 500 |
0.35 |
50 |
6.60 |
| 550 |
0.23 |
50 |
7.30 |
| 600 |
0.35 |
50 |
8.07 |
| 700 |
0.35 |
50 |
9.00 |
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Spiral Ducts
- For use in air ducts.
- Diameter: 100 mm - 700 mm
- Thickness: 0.4 mm - 1.0 mm
- Material: Galvanized steel strip
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