Fire shutters in Huizhou need to be sized correctly for the opening. Standard practice is to take precise measurements on site. The door is then built to those dimensions.
Dimensions
Fire shutter width equals the opening width plus overlap on both sides — typically 100 to 200mm per side. Height equals the opening height plus the roll-up space above. For a 3-meter door, you need roughly 400 to 500mm above the opening for the rolled curtain and housing.
Steel Fire Shutter Materials
The curtain uses cold-rolled steel slats, interlocking design, standard thickness 1.2 to 1.5mm. Composite fire shutters have two steel faces with fire-resistant insulation between them. Guide rails are galvanized steel, usually 1.5 to 2.0mm thick. The barrel shaft is seamless steel tube. Housing is typically galvanized steel sheet, 1.0 to 1.2mm thick.
Inorganic Fabric Special-Grade Shutters
The curtain is multi-layer: fire-resistant fabric, ceramic fiber blanket, radiation-proof cloth, and decorative fabric, all sewn with high-temperature thread. These curtains weigh about 5kg per square meter — much lighter than steel at 20 to 30kg per square meter.
Installation Steps
- Site survey and measurement — confirm opening, structure, and power availability.
- Mark and drill — guide rail positions, support plate positions, control box location.
- Install guide rails — plumb and parallel, uniform gap top to bottom.
- Install support plates and shaft — shaft must be level, barrel rotates freely.
- Hang the curtain — attach slats, thread into guide rails, install bottom beam.
- Install the operator — mount motor, connect drive chain.
- Wire the control system — power, buttons, and fire alarm interface.
- Test and adjust — set limits, test all functions, adjust as needed.
After installation, the installer should provide the operation manual, warranty card, and demonstrate basic operation including the manual quick release.