The use of efficient screws, slotted barrels, and strong water jacket cooling greatly improves the conveying capacity and ensures efficient extrusion; High torque vertical structure gearbox; DC driven motor. A basket type composite die suitable for polyolefin processing, which ensures the stability of efficient extrusion and can achieve low stress and pipe quality caused by low melt temperature. Adopting efficient dual chamber vacuum sizing technology and spray cooling water tank to improve the yield of pipes and meet the needs of high-speed production. Adopting a multi track tractor, the traction force is uniform and stable. Each track is driven by an independent AC servo motor, and the driving technology controlled by a digital controller achieves accurate speed adjustment to achieve height synchronization. Adopting a high-speed and precisely designed cutting machine, the cutting section is flat and equipped with a powerful chip suction device, reducing maintenance work to a minimum.