industrial door is a Door & Window Bolts product. Key specs — Origin: china.
Product Description
1.door panel: made of 0.5mm bi-layer color steel sheet filled with polyurethane foam, the density of the polyurethane foam is 43kg/sqm.
2.metal parts: made of 2.5mm hot-deep galvanized steel sheet,against corrosion and rust 3.balancing system: the torsion spring is made of 602 silicomanganese,more than 30000 times 4.falling prevention setting: peculiar chip type and blade type falling prevention setting 5.breakage prevention device for torsion spring, aluminum alloy door frame,security lock,additional closer 6.transmission: adopt shaft-drive motor 7.safety setting: install safety air bag at the bottom of the door leaves, infrared monitor,top limit switch 8.operation mode: adopts vertical lifting electric operation mode according to the actual operation space. the running speed is about 150mm/s
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