This machine is for quickly preheating the short aluminum bar before extrusion. parameters:dimension of the rapid heating furnace: 4", ... of preheating segments:4500mm,4600mm,4600mm,4600mm,6120mmdiameter of aluminum bar:Φ102mm,Φ127mm,Φ152mm,Φ178mm,Φ203mmcapacity:1500kg/hbrand of the burning ... heat cycle fan:15kw,18kw,18kw,18kw,18kwpower of combustion-supporting fan:4kw,5.5kw,5.5kw,5.5kw,5.5kwheating ...