Brief Introduction,
It is specially designed for common flanges which use angle iron material .
Rolling/bending angle iron into round air duct.
The rollers can be changed according different needs. Such as flat iron、pipe、channel iron、rectangular tube，etc.
Specification,
| Model | JT-40 | JT-50 |
| Yield Strength | ≤245 | ≤245 |
| Min. Rolling Diameter | 200-400 | 300-400 |
| Function | ∠40×4 | ∠50×5 |
| Diameter | L. mm | 700 | 800 |
| W. mm | 500 | 550 |
| H. mm | 950 | 1100 |
| Weight | Kg | 370 | 400 |
| Power | Kw | 1.5 | 2.2 |
