Round ductwork serves as well as square ducts for air transport. Preferably the circular pipe is, the better to keep clean and easier to produce pieces of simple shapes. Round duct made of sheet and rolled galvanized steel sheet DX51D MAC with a zinc coating of 275 g / m2 with suppressed flower.
Luxuriously circular pipes made of stainless steel plate, black plate, Aluzink copper or aluminum.
Luxuriously can be coated pipe flanges according to customer requirements outside the dimensional table or use a steel profile flange primed. To increase corrosion resistance ductwork can protect the paint or komaxit. At the customer we can supply pipes insulated or thermal insulation, including fire covered with iron (insulation to metal).