... (parallel) double-screw extruder, vacuum sizing platform, tractor, cutting machine, stacker, etc. The conical (parallel) double-screw extruder and ... be divided into up and down pedrail, three-claw, four-claw, six-claw, etc. in terms of thickness and ... pipes and inner layer foaming pipes.The main technique parameter: Parameter\ modelSJPGZ-160SJPGZ-400SJPGZ-630main machine modelSJZ-65SJZ-80SJZ-92maximum ...