Scope of Application

Factory buildings, warehouses, tunnels, substations, and underground parking garages

Technical Specifications

1. Implementation Standard: GB 14102-2005 “Fire-Resistant Rolling Shutters” 2. Model: GFJ-300300-F3-Cz-D-80 3. Opening/Closing Speed: 2.0–7.5 m/min

4. Fire resistance: Class F3, with a fire-resistance rating of >3.0 hours. 5. Wind-pressure resistance: Class 80 (784 Pa).

6. Electrical Functions: Main power supply 50 Hz, 380 V; signal power supply 24 V

Control System

1. The rolling shutters can be controlled independently, or they can be interlocked with smoke detectors, heat detectors, and temperature-fuse devices, or directly interfaced with the fire alarm central control room, among other options.

2. Smoke detectors can trigger an alarm, causing the rolling shutter to automatically descend to a height of 1.8 meters above the floor, with a delay of 0–180 seconds (adjustable), before continuing to lower and fully close.

3. Chain-break protection device: The rolling shutter can be equipped with a chain-break protection device to ensure its safe and reliable operation and to guarantee safety.

Material Selection Explanation

1. Curtain Panels: Made from high-quality hot-dip galvanized steel strip, which is roll-formed on both sides and then laminated; the internal cavity is filled with aluminosilicate fiber wool, resulting in minimal thermal shrinkage and exceptional high-temperature resistance. The panels exhibit excellent corrosion and rust resistance as well as strong wind-pressure resistance. Upon customer request, they can also be fabricated from stainless steel sheet or color-coated steel sheet.

2. Bottom Beam: The bottom beam is a box-type structure fabricated by roll-forming high-quality hot-dip galvanized steel sheets. The internal cavity is lined with composite curtain panels, and the surface features no joints or welds, resulting in a clean, aesthetically pleasing appearance and exceptional structural strength.

3. Guide Rail: With a thickness of 1.5 mm, the guide rail is manufactured as a split composite structure, embedding the control-button wiring conduit and expansion bolts within the rear cavity. The exterior surface features no exposed screw heads, ensuring a clean, aesthetically pleasing appearance and superior structural strength that fully rivals that of the building itself. The material is high-quality hot-dip galvanized steel sheet, roll-formed without any joints along the entire length. 4. Roller Shaft: Depending on the size of the door opening, high-quality straight-seam welded pipe, spiral-welded pipe, or seamless steel pipe is selected, with the outer diameter of the pipe wall subjected to anti-corrosion and anti-rust treatment.

5. Hoist and roller shutter controllers: Products that have been tested and certified as compliant by the National Fire Protection Testing Center of the Ministry of Public Security and have obtained 3C certification shall be selected.

Installation Structure Diagram

1—Curtain panel 2—Guide rail 3—Fireproof box 4—Reel 5—Bearing 6—Control box 7 and 8—Push-button boxes