MMB2.1*2.0 closed doors are mainly used in the passage from the underground main substation and main drainage pump room to the underground vehicle yar...
MMB2.1*2.0 Closed-door product introduction
MMB2.1*2.0 closed doors are mainly used in the passage from the underground main substation and main drainage pump room to the underground vehicle yard. They are easy to be closed to prevent sudden water immersion.
MMB2.1*2.0 Closed door structure Main structure
1. The closed door is welded by flat steel plate, shaft reinforcement plate, ring beam, etc.
2. The door frame is channel steel and I-steel combined frame structure.
3. The tension device is wedge-shaped slider wedging.
4. The door hinge is supported by rolling bearing.
MMB2.1*2.0 Parameters related to closed doors
Example: MMB2.1 * 2.0
2.1(net pass width of adit mouth 2100mm)
2.0(net pass height of adit mouth 2000mm)
Thickness of steel plate: 10 thicknesses (all national standard thickness)
Closed door under pressure: 98KPa
MMB2.1*2.0 Closed door physical picture