Rigid air duct SPR series

galvanised steelcopperstainless steel

SPIRAL ventilation ducts are produced in diameters range 80 mm to 1600 mm of galvanized, aluminium and stainless steel sheet. Standard length of spiral tube - 3 metres. SPIRO tube ducts are used as a basic element of the ventilation system. For special requirements eg. swimming pools or food industry buildings we can offer spiral ducting made of stainless steel sheet with the addition of molybdenum. The thickness of sheet for typical elements depends on diameter and equals to 0,5 - 1,5 mm. Vent ducts of more than 250 mm in diameter are additionally crimped to increase their negative pressure resistance.