This Spiral Corruated Post-Tension Tube/Pipe Making Machine is special for producing round & flat corrugated ducts used in expressway, bridge, train and large-span post-tension concrete project. The prestressed Protection Tube Machine is suitable for both indoor and site work. With its special corrugations, a very high radial stiffness well adapted for use as former in concrete structures. Corrugated tube is also being used as culverts and forms for concrete projects, plinths and columns.
On many construction projects like apartment buildings, parking garages, office buildings, industrial buildings, bridges and docks, schools and hospitals, the introduction of the prestressed protection tubes will make it possible to use very long spans. The reduction in weight allows large areas and fewer columns which in turn will give technical economical and esthetic advantage. As the prestressed protection tubes are used to reduce the cross section area, the weight of the structure reduction will amount to approximately 40% and thus produce a favorable effect on foundation, wall and slab construction. The tube is a very rigid but yet light weight sheet metal tubing that without excessive deformation, withstands existing forces during the pouring of the concrete. The spiral seam is tight and no water from the concrete will enter the tube. The low weight of the tubing makes it easy to handle.
MAIN TECHNICAL DATA: Suitable Material	cold rolled steel and of hot dipped galvanized steel Strip Width	 78mm Strip Thickness	0.3~0.4mm (standard size 3.5mm) Pitch of Spiral	65mm Swage Type	Double-lock Working Speed: 	15 m/min Motor Power	380V, 3phase, 50Hz Round duct making machine Main Motor 4kW Cutting Motor 1.5kW Lubricant Motor 0.125kW 	 Dimension Round duct machine: 1600 x 1200 x 1600mm