Hot dipped galvanized steel corrugated FLAT duct
Size and shape can all be customized
Our duct mainly used for post tension concrete grouting,
thickness: 0.25mm,0.28mm,0.3mm,0.35mm,0.4mm,0.6mm
most popular size: 70*20mm,50*20mm, 90*25mm
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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