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      Product features
      
                    
      Screw made of high quality alloy steel, precision machining, tempering and nitriding treatment, with the best hardness and corrosion resistance,

      Specially designed screw equipped with forced conveying bushing, reasonable structure, stable performance, good plasticization, high output, low energy consumption, clear stratification,

      Is the production of high strength, aging resistance, no drops, light transmission, heat preservation and other functional membrane ideal choice.

      For different plastic ratio screw can be selected: ordinary type, pin type, barrier type, separation type, wave type, etc.

      
                
      
                
      
            
      

            
      
                
      
                    
      Extrusion screw - Blown film screw
      
                
      
                
                
      
                
      
                    
      
                        
      Screw is made of high quality alloy steel, after precision machining, and tempering and nitriding treatment, which has the best hardness and corrosion resistance, the special designed screw with forced conveying bushing, reasonable structure, stable performance, good plasticizing, high yield, low energy consumption, stratification is clear, is the production of high strength, ageing resistance, no drops, pervious to light, heat preservation functional membrane ideal choice.

      For different plastic ratio screw can be selected: ordinary type, pin type, barrier type, separation type, wave type, etc.
      Material: 38 crmoala
      Process: nitriding and bimetallic
      Nitriding depth: 0.5mm-0.7mm
      Bimetallic screw: alloy layer hardness HRC>60
      Nitriding layer hardness: HV960-1100
      Alloy layer depth: 2~2.5
      Screw straightness: 0.015mm
      Chrome plated screw: Chromium layer thickness: 0.03-0.06mm
      Surface finish: 0.04Ra/um~0.08Ra/um
      Nitride brittleness: less than grade 2
      Aspect ratio: 1: (25~35)