Zhoushan Nanhaiya Plastic Machinery Co.,Ltd is a professional manufacturer that engages in producing precise screw and barrel for several decades.With abundant technical power and advanced production process and equipment, the company integrates with years of experience in manufacturing screw and barrel,introduces advanced European and American technologies and processes, and engages in various screw,alloyspraying welding,single screw of different specifications,coned and parallel twin screw,PE wooden plastics,PVC, EVA,TPR,TR,aluminum-plastic panels,screws,and barrels. These products receive trust from clients for high level and high precision. Main products include: Single screw extruders' screw and barrel:φ15-940mm;Length-diameter ratio   1:8-1:60 series. Injection molding machines' screw and barrel:15G-25000G series. Twin-screw extruders'screw and barrel :φ25-φ200 series. Single screw categories:screen type,separated type,exhausting type,dowel type, double-end type,pelleting type,and chemical fiber screw. Twin screw categories:ordinary type,cone type,hypercone type,and pelleting   type. Various screw machine cylinders produced by the company apply 38CrMoAl A alloy steels.Through tempering qualitative processing,finish machining surface treatment in nitrogen,electroplating,and double alloys sprayed on the screw surface,the products are featured with high abrasion resistance,corrosion resistance and long lifetime and can replace import substitutes.The company's products are supporting for plastic machines of large and medium-sized enterprises.The product quality indexes and technical parameters reach or surpass the national standards. The company aim:with quality orientation,credit first,and excellence,the com pany sincerely welcomes allclients to inquire and patronize relevant business