... coating screw Bimetallic coating screw barrelDiameter: Φ 15-Φ 300mmTechnical Data:Nitride Case Depth0.5mm-0.8mmNitride Hardness950-1060HVNitride Brittleness≤Grade ... , separation type, exhaust type, pin type, double-head type, multi head type etc.It is suit for PA.PP.PC ... , and Blow Molding applications; relevant accessories(such as die head, gearbox, filter screen changer and so on); plastic processing ...