Hydraulic Double-leaf Watertight Hinged Door
- Application
Used in ocean engineering ships, large pipe laying ships and goods passageway of all kinds of engineering ships.

- Specifications
| No. | Clear size mm WxH |
Outline size (W+280) x (H+280) |
| 1 | 2000×2000 | 2280×2280 |
| 2 | 2000×2500 | 2280×2780 |
| 3 | 2000×3000 | 2280×3280 |
| 4 | 3000×3000 | 3280×3280 |
| 5 | 3000×3500 | 3280×3750 |
