... 1,vibrating sieve, 2,high speed mixer machine 3,cooling machine,4, plastic powder charger,5, conical double ... wall accordion pipe shaper,8, plastic pipe-expanding machine, 9,pilling bin, 10,water chilling unit, 11 ... ,air compressing machine. It can be used to produce PVC PE ... mold: 60hydraulic pressure0.4- 0.6Mpa Gas-compression pressure:0.4-0.5Mpa conical double-screw extruder ...