Hdpe pipe production line consists of extruder , head die , vacuum calibrator water tank , tractor , cutting machine and stacker etc. With reasonable structure , stable property and high output , so it is ideal line to produce hdpe pipe products .     composition of this line  Single screw extruder 1 set mark line single screw extruder 1 set head die 1 set  vacuum calibrating water tank 1 set 4 claws caterpillar tractor  1set planetary cutting machine 1set roller stacker1set electric controller unit 1set  The screw and barrel are the key for whole machine , which is made of excellent alloy steel 38crmoal , and processed by nitriding and polishing with thickness 0.35-0.7 mm .  so it can be used longer time and has the advantage of wear-resistance , corrosion resistance .  About temperature control system , it can be used the temperature sensor and controller to be controled automaticlly . The mode is cast aluminum to be heated and blowers to be cooled . About the head die The head die is made of alloy steel , high strength , good wear-resistance . Stable extrusion shape , so it is good to be applied to the water supply pipe products . About the transport system , both gear and shaft parts are made of high strength alloy steel with carburizing and quenching , so it has the features of high loading capacity , stable running , low noise and high effiency etc.