Ms.Shree Venus Energy manufactures Rigid Spiral Ducts using the State-of-the-art latest Hi-tech machines from Ms.Spiro International , Switzerland, the pioneers in manufacturing of Spiral duct machines in the World. The duct manufactured in this machine meets highest air tight classification as per International Standards. RANGE OF PRODUCTS:Diameter Range : From 80 mm dia to 1400 mm diaThickness Range : 0.4 mm to 1.2 mm thicknessTube Length : UnlimitedMaterial : Aluminium, Brass, Copper, Zinc, Galvanized CRCA Sheet, Stainless Steel or Plastic Coated Steel.Fittings:Different fittings like Elbows, Reducers are made in a specially designed Gorelocker machine from Ms.Spiro, Switzerland, ensures the uniformity of sizes and trouble free erection at site. Also, the air tighteners of classification meets the International Standards.