RHidoor makes fire-rated roller shutter doors in several materials: steel, inorganic fabric, vertical steel, and side-coiling steel. Most people don’t know much about these doors, so let’s walk through them.
Where they’re used:
Fire-rated roller shutters work in both industrial and civilian buildings: malls, hotels, warehouses, exhibition halls, archives, theaters, stations, ports, underground works, and any public space that needs a movable fire barrier. They block fire spread and cut the damage a fire causes, which is why they’re standard equipment in modern buildings.
What they’re made of:
The vertical steel fire-rated shutter follows national and relevant standards. It uses steel for the curtain, rails, bottom bar, lintel, and housing, with a fire roller and control box, meeting fire-resistance and heat-radiation limits.
Applications:
Fire separation in industrial and civilian buildings.
Features:
The vertical steel shutter runs three ways: electric, manual, and auto-close. The control box carries smoke and heat sensors, works on its own, and also links to the fire control system. It handles opening/closing and the two-stage descent automatically. During a fire it slides down and closes on its own, isolating the fire zone.
- Opening/closing speed: 2–9 m/min
- Power: 3-phase, 380V, 50Hz
Main functions:
1. Button control for up and down, with auto-stop at the upper and lower limits.
2. On a smoke signal, the door drops to the midpoint and holds, then closes after a 60-second delay. Alternatively, the smoke signal drops it to the midpoint (acting as a smoke curtain), and a heat signal drops it the rest of the way.
3. Network link to the fire control room for remote control, with door position reported back.
4. A thermal release device closes the door automatically during a fire even if the power is out.
5. Pulling the manual quick-release drops the steel shutter.
6. Fire ratings: Grade 1 (1.50h), Grade 2 (2.0h), Grade 3 (3.00h), Grade 4 (4.00h).