... Low Cost & High Output -Good Molding PVC Pipe Production Line This PVC pipe production line is mainly used in the agricultural water supply ... drainageconstruction, cable supporting, thickness of pvc plastic pipe. The PVC pipe production line has conical twin-screw extruder, vacuum sizing ... , bonding, bending, welding, pipe installation workload is only 1 / 2 to the steel pipes, low labor intensity, ...