Pipe marking line is extruded by smaller single screw extruder through the composited extrusion die. Vacuum calibration water tank: it is equipped with two-stage vacuum system(for large diameter)advanced water recycle & high pressure cooling system, vacuum degree adjustment device and accurate water level & water temperature automatical control system. The accurate stannum bronze calibratation sleeve ensures fast cooling speed and molding of pipe. Its material is stainless steel. Spray cooling water tank: Long cooling unit ensures high efficiency cooling, Unique pipeline design shorten cooling length, its material is stainless steel. Haul-off unit: special integral transmission unit avoids asynchrony of individual transmission, Various control method ensures more flexible & accurate orientation, Accurate pressure regulating system makes hauling power adjustable. It has unique structure & flexible operation, its speed can be adjusted by motor inverter. Cutting unit: Full-hydraulic design of cutting unit ensures flexible pressure in state of cutting pipes, Flexible adjust for saw position & cutting depth, Unique power input system ensures high reliability of planetary unit, With ultra silent & enforced sucking system, Unique non-scrap cutting unit enusre clean cutting section for 16mm to 315mm pipe. Control system: Adopts the one of the most advanced plastic extrusion machinery control systems----PLC. It can ensure much higher quality extrusion, PLC system ensures high speed and convenient internet function that much more accurate and flexible control, intelligentized control order make the operation more simple. Packing in film or according to your needs.