PVC wave board extrusion line can continuously produce colorful, weather-resistant, burning resistant UPVC plastic wave board, together with the SJSZ-60 22 conical twin-screw extruder and the corresponding wave board molding machine ,hauling engine and cutter. It can also produce the plastic flat board by changing some assembly. Besides it can produce PP.PC wave board by changing the mainframe. This unit has the characteristics of excellent plasticization, stable performance, compact structure, high automation and convenient operation. It is the ideal machine for the manufactures of constructions.