• Roughness of Surface：Ra 0.4um
• Fragility of Nitration：Less Than Grade One
• Linearity of Screw：0.015mm
• Bimetallic Layer Thickness：2-3mm
• Hardness of Bimetallic：HRC58-62

1)Fe-based alloy  

2)Ni-based alloy/Deloro alloy 

3)Co-based alloy  

4)NiCo-based alloy 

5)Tungsten carbide/Wolfram carbide 

Level A - containing Tungsten of 40%

Level B - containing tungsten of 25%

Level C - containing tungsten of 9.5%

High Frequency Treatment

Nitriding treatment(120 Hours)

Hard Chrome Plating treatment

Bimetallic alloy coating

Vacuum quenching

Depth of Nitrided Layer: 0.5-0.8 mm

Hardness of Nitrided Layer: 950-1020Hv 

Thickness of Hard Chrome Plating Layer: 0.03-0.08mm

Hardness of Hard Chrome Plating Layer: ≥950HV

Bimetallic Barrel/Cylinder: Centrifugal Casting

Depth of Bimetallic Layer: 2-3mm

Hardness of Bimetallic Layer: HRC58°-62°

Roughness of the surface:Ra0.4um

Linearity of the screw: 0.015mm

Fragility of Nitration:less than one class

Hardness after Hardening & Tempering: HB260-290

1)General Plastics

2)ABS,PA,PC,PE,PET,PP,PS,EVA,PU,PVC,U-PVC,etc

3)PA + GF(Glass Fiber)

4)Flame-resistant Reinforced Plastics

5)Modified Engineering Plastics

6)All kinds of Mixed Recycled Material(in Scrap or Granule),etc

1)High productivity        

2)Wonderful plasticizing

3) low energy consumption  

4)Wearable and Durable

5)Fast and On time delivery

6)Best customer service