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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)