1. Our manufactory and workshops
2. Product introduction
l LFT-HSD high-speed spiral door is a type of innovative industrial metal door, which combines high-speed, energy-saving, good-sealing, high-efficiency, wind-proof, and environmental protection together, and also famous for its high reliability and practicability.
l LFT-HSD high-speed spiral door not only guard against illegal incursion from the outsiders, but also protect the inside from variable weather, and cut off the air convection from indoor and outdoor. Nowadays they are used widely in fast exit with frequent access, and become an ideal choice for energy-saving and high efficiency.
3. Why choose Lefast? Please see the comparison with other suppliers
1. We adopt 6mm hinge, which come from well-known Nanshan aluminum, vs. others - only 3mm unknown brand aluminum
2. Lefast control box and motor，famous for its stable quality, easy operation, accurate orientation and fast feedback, it’s also equipped with manual function in case of power cut or any failure.
3. Infrared radiation design, it will stay opening when there are objects below the door.
4. Lefast’s decelerator is good at high efficiency, small resistance, long lifetime and low noise
5. Double-corkscrew turbine layout, which good at its stability and safety, others use single corkscrew turbo.
4. Product parameters
Category | Technical Parameter |
Size Scope | HSD4322 : W1400mm~6000mm, H1800mm~6100mm HSD8022 : W3000mm~8200mm, H2300mm~9000mm |
Opening speed | 0.8M/S~2.0M/S，adjustable |
Closing speed | not lower than 0.6M/S，adjustable |
Wind resistance | resistance to wind level 12 due to its unique and precise mechanical design |
Raising Rail | Double-corkscrew turbine layout, which good at its stability, safety and strong capacity, as well its smooth and high-speed opening. |
Rail structure | The hinge axis is coated with QPQ, which can strengthen self-lubricating function and resistance to corrosion, 3-5 times than galvanized axis. |
Door frame | Adopts ShouGang galvanized steel plate with precise cutting and fine CNC bending, also its protective cover can last 10 years without rust. The surface appears elegant, dust-proof and easy to clear. |
Door Material
| Aluminum alloy insulation panel with thickness of 43mm/80mm and width of 220mm, also coating treatment for its surface, the Internal fills polyurethane (no CFC) industrial heat insulating material. Color : white , silvery, gray etc, are available. Excellent sealing and insulation. |
Bearing Capacity | Our stress tolerance with automatic core setting and double rolling bearing are three times than other normal design. The door still can operate in order even if the building structure is about to buckle. |
Control box and motor | LEFAST control box and motor，famous for its stable quality, easy operation, accurate orientation and fast feedback, it’s also equipped with manual function in case of power cut or any failure. |
Safety device | Infrared radiation design, it will stay opening when there are objects below the door. |
Opening Method | there is push buttons in the control box(standard), other methods also are available, such as Radar, drawstring switch, interlocking, geomagnetic sensing, Bluetooth RF, remote sensing etc.(extra-charge). |
5. Project Cases
