The PVC/UPVC Pipe Extrusion Line (Four Cavity) is a high-efficiency industrial system designed for simultaneous production of four PVC/UPVC pipes (Ø16-32mm) in a single cycle. Featuring a conical twin-screw extruder (SJSZ 65/132) and stainless steel spray calibration technology, this line ensures independent control over each cavity, eliminating cross-interference during adjustments. With automated four-tube haul-off and cutting systems, it maximizes output while saving 50% factory space and labor costs. Ideal for small-diameter pipes in plumbing, irrigation, and electrical conduits, this energy-saving extrusion line supports quick mold changes for diverse pipe specifications, delivering unmatched productivity for high-volume PVC/UPVC manufacturing.