STEEL STRUCTURE PROTECTIVE EQUIPMENT

Inward-Opening Double-Leaf Protective Airtight Door for Ramp

Features

The door leaves open towards the interior of the project. There is no raised threshold on the ground in peacetime, only trench cover plates are equipped. It enables rapid functional conversion in wartime.

Scope of Application

Applied to the ramp ends at entrances and exits of underground civil air defense projects.

Key Design Considerations

Construction and Installation Requirements

Product Specifications

No.Model / ParameterDoor Opening Width (mm)Door Opening Height (mm)Door Leaf Thickness (mm)Remarks
1NSFM4025(6)40002500196Double-leaf door leaf width = Door opening width + 200 mm;
Door leaf height = Door opening height + 200 mm
2NSFM4525(6)45002500196
3NSFM5025(6)50002500196
4NSFM6025(6)60002500196
5NSFM7025(6)70002500196
6NSFM5025(6)50002500240