1. Used at working site, making duct at working site,
2. Operated easily, nimble structure, working steady
3. Make round duct or flat duct, used for post tension
4. Steel strip can be 0.35mm, 0.4mm
5. Making black steel duct and galvanized steel duct
Spiral prestressed corrugated pipe making machine
Corrugated pipe making machine
1. Galvanized steel duct thick 0.15mm, 0.2mm, 0.25mm, 0.28mm, 0.35mm, 0.4mm, 0.5mm, 0.6mm
Cold rolled strip production technology:
1. Acid pickling, 2. Rolling, 3. Annealing , 4. Anti-corrosion oil painting, 5.
Leveling , 6 cutting, 7. Packing
| Material |
Standard |
Grade |
Equivalent foreign standard |
Foreign Grade |
Application |
| Structural steel |
GB/T912-1989 |
Q195 |
JISG3101 |
SS3300 |
For Building, Bridge, Ship, vehicle etc. |
| Q235B |
SS400 |
| SS400 |
SS490 |
| ASTMA36 |
SS540 |
Audited Supplier 
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