Brief introduction of the Production line The machine is made of vibrating sieve, high speed mixer machine and cooling machine, plastic powder charger, conical double screw plastic extruder,(single screw extruder) handpiece, double-wall accordion Pipe shaper., plastic pipe-expanding machine, pilling bin, wate chilling unit, air compressing machine. It can be used to produce PVC. PE Plastic double-wall accordion pipes and plastic single-wall accordion pipes.