plastic machine/PP-R pipe production line 1. high efficiency screw 2. easy operation and adjustment 3. PLC automatic control system Application High efficiency PP-R,HDPE single pipe and dual-strand pipe production line are widely used in the uptown apartment and village water supply and drainage. Feature and advantages This production line aim at the characteristic of the PP-R and HDPE pipes. This line adopts our ownJX series high efficiency single screw extruder equipped with the Siemens PLC controlling system. It can realize the whole line automatic controlling of high capacity , stable extruding with the suitable changing of different units could realize the production job of PE-RT,PEX ,PB pipe.