Spiral corrugated prestressing machine for post-tension tube making

Prestressing machine is special for producing round & flat high-speed spiral post tensioning ducts used in expressway, bridge, train and large-span post tenion concrete project. Prestressing machine is suitable for both indoor and site work. Prestressing machine is of high-speed and better material utilization, e.g., raw material width is 35.4~36mm, finished spiral pitch is 23mm, material untilization ratio is 63.9%! Buildup of the prestressing machine The post tensioning machine is comprised of mechanical expansion decoiler, guiding & lubricating device, main forming unit, flying saw cutter and unloading rak. The post tensioning machine uses round post tension tube as raw material, flattening round posttension ducts into oval shaped posttension tube . Main technical data. No. Item Data 1 Type ZHP-135 2 Diameter range 35~135mm 3 Suitable material thickness galvanized steel strip, 0.2~0.4mm 4 Suitable strip width 35.4~36mm 5 Pitch of spiral 23mm 6 Seam lock type double lock seam 7 Strip linear feeding speed 0- 40 m/min 8 Motor for round duct machine 4kW 9 Motor for oval duct machine 3kW 10 Total weight About 600kg 11 Dimension of round duct machine About 1300 x 1800 x 1300mm 12 Dimension of oval duct machine About 800 x 450 x 800mm