Hebei Hong'an Fire Door Co., Ltd. is one of the most reliable manufacturers and suppliers of steel fire roller shutter in China. If you're going to buy durable steel fire roller shutter made in China, welcome to get free sample from our factory. All customized products are with high quality and low price.
Inspection of Structural & Material Specifications
1.3C-certified dedicated fire roller shutter motor, fire control linkage controller and backup power supply
2.Thermal release device, manual emergency lowering mechanism and hand crank chain (essential for emergency descent during power failure)
3.Matched smoke/heat detectors; the controller for evacuation passage shutters supports the two-stage descent logic
4.Intact smoke-sealing structure to prevent smoke and flame penetration
1.Nominal base thickness of shutter slats ≥ 0.8 mm; base thickness of concealed guide rails ≥ 1.5 mm
2.Bottom beam, roller and other components comply with national standard wall thickness requirements (single plate of bottom beam ≥ 3.0 mm; bent plate ≥ 1.2 mm; wall thickness of roller steel pipe ≥ 2.5 mm)
3.Material: qualified galvanized / cold-rolled steel plates, intact anti-corrosion powder coating, no severe rusting, cold solder joints or cracking/deformation
4.Class A composite shutter: filled fully with high-density aluminium silicate fire-resistant wool, no hollow or insufficient filling, and intact fireproof sealing strips
Verification of Qualifications and Documentation (Primary Inspection Item)
✅ 1. Fire rolling shutters on evacuation routes (two-stage descent)
Upon smoke detector alarm: the shutter descends to an intermediate position approx. 1.8 m above the ground to contain smoke, then pauses. Upon subsequent heat detector alarm: the shutter fully descends after a delay. Status signals are correctly uploaded to the fire alarm control panel.
✅ 2. Fire compartment rolling shutters (one-stage descent)
Comply with standard linkage logic. The shutter fully descends directly after receiving the alarm signal, with status signals properly fed back to the fire control room.
✅ 3. Remote control via fire alarm control panel
The shutter can be raised, lowered, stopped and reset normally via the fire alarm control panel, with accurate status feedback.
✅ 4. Class C non-insulated steel fire rolling shutters
Verify that the supporting water curtain / sprinkler cooling system functions correctly with synchronous linkage.
1. Class A Fire Rolling Shutters
Core capability: It satisfies both fire resistance integrity (blocking fire and smoke) and thermal insulation (blocking high-temperature heat). Essence: It meets both criteria, functioning as both a fire barrier and a thermal barrier on its own.
2. Class C Fire Rolling Shutters
Core capability: It only meets fire resistance integrity (blocks fire and smoke) and has no inherent thermal insulation, allowing substantial heat transfer. Key prerequisite: It must be used with a water curtain cooling system, and cannot independently replace firewall structures as the primary fire compartmentation barrier. Limitation: It cannot withstand high temperatures by itself and relies entirely on external water cooling; it is not a direct substitute for main firewalls.
3.Fire resistance test standard
GB/T 7633, Fire resistance test method for doors and shutters
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