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RX-801(imported) nylon fabric expansion duct Material: Imported nylon cloth (grey) Specification size: 1, with a diameter of 50MM -- 600MM 2, pipe thickness:0.40mm 3, temperature:-25℃--+130℃ 4, steel wire:0.8-2.3mm Characteristics: 1. Covered with imported nylon cloth and supported by spiral steel wire, nylon cloth is hot-pressed and bonded to the top and bottom of the wire to strengthen the adhesion and tension. 2, maximum pressure 1200pa, standard length 10M. 3, high expansion bending, easy construction, anti-aging, long use time. Use: Used for all kinds of mechanical ventilation. Chemical, waste gas and other emissions, it has high temperature resistance, acid and alkali resistance, strong flame retardant.