TECHNOSPIRAL TWIN GAL
Double-Walled Spiral Welded Ducts
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Manufactured with an outer layer of EN10142 galvanized steel and an inner layer of AISI 304 stainless, non-magnetic steel
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Steel thickness: Inner 0.40 mm, Outer 0.50 mm
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Rock wool insulation
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Available diameters: Ø80 to Ø350
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Wide range of fittings available
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Available lengths: 3 m – 2 m – 1 m
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Suitable for air conditioning and ventilation
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Operating temperature range: -30°C to +400°C

