... making machine 1.180-500kg output 2.16-630mm water pipe 3.high speed 12m/min 4.PLC control system PVC pipe making ... sizing platform, tractor, cutting machine, stacker, etc. The conical (parallel) double-screw extruder and tractor adopts ... into up and down pedrail, three-claw, four-claw, six-claw, etc. in terms ... production lines of inner-wall spiral pipes, inner hollow wall pipes and inner layer foaming ...