... , cooling machine, plastic feeder,conical twin screw extruder (or single screw extruder) ,machine head,Double-wall Corrugation Pipe forming machine,plastic pipe belling machine,stacker,water-cooling machine,air ... -wall and single-wall corrugation Pipe. Technical parameters of forming machine for single wall corrugation pipe line: Forming machine noBW-I-13BW-I-36BW ...