Specification：

Φ45/90  Φ45/100  Φ50/105  Φ51/105  Φ55/110  Φ60/125 Φ65/120 Φ65/132 Φ68/143 Φ70/140 Φ75/150 Φ80/143 Φ80/156 Φ92/188Comressing rate of screw can be designed according to different raw materials and products. 

Material：

38CrMoALA(JIS SACM645) 

9Cr18MoV 

SKD61

 
hear_treatment 

Nitriding treatment 

Spray corrosion-resisting and wear-resisting bimetallic layer