The PVC pipe,PVC slot pipe production line which can produce one to two or small pipe one to four at the same time is also called PVC construction threading pipe production line,PVC double pipe extrusion production line,electric pipe production line,electric threading pipe production line,FS-51/105 cone type double pole extruder equipped with double die head,double pipe vacuum fixed size tank,double pipe capstan,double pipe fixed length cutter,double discharge frame.Wih the unique screw design,materials in the barrel can stay for a short time,so that the mixing and plastic effect is good.Use high quality reduction box,beautiful appearance,smooth running,low noise.The use of vacuum exhaust system can discharge the water and volatile gas in the material to improve the quality of products.The production efficiency of one mold two pipes or four pipes can be doubled at least.Independent control makes the operation practical and convenient.