the extrusion line for precision small tube are consist of SJ-65*30 single screw extruder, and the matching mould, Vacuum forming device, plain-barrel tractor, cutting machine, etc. the line are compact conformation, has the high performance, the screw and barrel are optimum design, adopt to High-performance steel 38CrMoAiA, gentle molding design guarantees the quality of the material, the output are stable, high capacity and a long-lived. The barrel of mainframe adopt to cast aluminium heater, cooling by fan, the temperature are controlled by precision Electronic Instrument. The gearbox with rigid teeth ensure that there is no problem when a long last time. The motor of extruder, tractor, cutting machine are adapt to frequency control, stable running and precision control. The whole line are integrated design, the main and donkey engine are running in a line with High efficiency, high performance, high stability, The machine is ideal for laboratory education and small production, the system is also suitable for extruding straws, refill tubes and most small diameter tubing and a wide range of industrial applications