RHIDOOR Industrial Doors

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).

Fire-rated roller shutter product card 1

Fire-rated roller shutter product card 2

Fire-rated roller shutter doors are used in public places with fire-safety requirements: large supermarkets, shopping malls, material markets, exhibition halls, factories, warehouses, and underground parking garages. When a fire alarm sounds, the shutter drops on its own under the building’s fire control system, following a preset program. That slows the spread of flames to other areas and buys time for firefighting. These doors are built to a higher standard; the whole system has to survive around 1,100°C for a set period. How long the door holds its rating is the spec that matters most.

Main parameters:
– Door surface: the housing is cold-rolled steel plate, 2.0–2.5 mm thick.
– Curtain materials:
1. High-density industrial base fabric: made in France; thickness 0.8–2.0 mm. Tensile strength (warp/weft): 5700/5100 N/5cm; tear strength (warp/weft): 900/80 N; operating temperature −30°C to +70°C; fire rating NF-P92-503 M2 (France) or DIN 4102 B1 (Germany).
2. Transparent PVC sheet: 1.5–2.0 mm thick.
3. Control system: PLC and frequency converter.
4. Several manual and automatic controls: push button, pull cord, remote, magnetic loop, radar, and photo-eye interlock, so the door opens and closes the way you need.

RHidoor has earned a solid reputation for product quality, stable performance, and full pre-, during-, and after-sales service, backed by steady technical innovation, professional manufacturing, and fair pricing. We work by “technology-driven innovation, excellent quality” and aim to be a leader in industrial doors.

The premium double-track, double-curtain inorganic fire-rated roller shutter is lightweight and insulates well. Its reverse-side temperature stays low and its fire resistance is complete, which makes it a good fit for very large spans and unusual fire-compartment shapes. It also puts less load on the building structure.

Fire-rated roller shutter door

Technical parameters:
– Average temperature rise on the unexposed side: ≤79.6°C; single-point rise ≤113.3°C; fire resistance rating ≥4.0h
– Opening/closing speed: 2–9 m/min
– Smoke leakage: no more than 0.2 m³/(m²·min)

Main technical parameters:
– Fire performance: fire resistance 180 min; radiation heat on the unexposed side 0.61 W/cm²
– Wind-pressure resistance: at 784.5 Pa, mid-curtain deflection 45 mm
– Motor power: 0.25–1.5 kW
– Main power: AC380V 50Hz; control power: DC12–24V
– Average opening/closing speed: 2–9 m/min; gravity descent speed: 4–9 m/min

Control method:
The electric control system accepts on/off smoke and heat-detector signals to close the door, or it links to the fire control center. You can run the door by hand during normal use. In a fire it drops to the midpoint automatically, then continues to the bottom after a delay. During a fire you can press any key to send the door back up; the reverse height and the midpoint dwell time are both adjustable. On request we can add an obstacle-stop safety sensor and a low-temperature (70°C) thermal-fuse device.

Fire-rated roller shutter door classifications:
– Steel fire-rated roller shutter: curtain, rails, bottom bar, lintel, and housing made of steel, with a roller motor and control box, meeting fire-integrity requirements.
– Inorganic composite fire-rated roller shutter: curtain of inorganic fiber, with steel clamps, rails, bottom bar, lintel, and housing, plus roller motor and control box, meeting fire-integrity requirements.
– Premium fire-rated roller shutter: curtain of steel or inorganic fiber, with steel rails, bottom bar, clamps, lintel, and housing, plus roller motor and control box, meeting fire-integrity, insulation, and smoke-control requirements.

Related Articles

Related Articles

Related Articles