·With SJSZ-60x22 Taper Twin-Screw Extruder combined with corresponding wavy plate molder,drawing auxiliary machine and cutter, SJLB-60x22-1000 set for extruding wavy plastic plates can continuously produce the coloured,weather-resistant and flame-retardant wavy UPVC plates used in the construction. If replacing the relative pare, it can also produce flat and grid plastics plates. The set has the characterisitics of good plasticizing,stable performance,compact structure,high automatic degree and convenient operation, is the ideal productive equipment for construction manufactures.